update doc

Signed-off-by: Nshawn_he <shawn.he@huawei.com>

en/application-dev/reference/apis/js-apis-hidebug.md

@@ -30,9 +30,10 @@ This API is defined but not implemented in OpenHarmony 3.1 Release.
 
 
 **Example**
-  ```js
-  let nativeHeapSize = hidebug.getNativeHeapSize();
-  ```
+
+```js
+let nativeHeapSize = hidebug.getNativeHeapSize();
+```
 
 
 ## hidebug.getNativeHeapAllocatedSize
@@ -45,17 +46,18 @@ This API is defined but not implemented in OpenHarmony 3.1 Release.
 
 **System capability**: SystemCapability.HiviewDFX.HiProfiler.HiDebug
 
-
 **Return value**
+
 | Type  | Description                             |
 | ------ | --------------------------------- |
 | bigint | Size of the allocated native heap memory, in kB.|
 
 
 **Example**
-  ```js
-  let nativeHeapAllocatedSize = hidebug.getNativeHeapAllocatedSize();
-  ```
+
+```js
+let nativeHeapAllocatedSize = hidebug.getNativeHeapAllocatedSize();
+```
 
 
 ## hidebug.getNativeHeapFreeSize
@@ -68,17 +70,18 @@ This API is defined but not implemented in OpenHarmony 3.1 Release.
 
 **System capability**: SystemCapability.HiviewDFX.HiProfiler.HiDebug
 
-
 **Return value**
+
 | Type  | Description                           |
 | ------ | ------------------------------- |
 | bigint | Size of the free native heap memory, in kB.|
 
 
 **Example**
-  ```js
-  let nativeHeapFreeSize = hidebug.getNativeHeapFreeSize();
-  ```
+
+```js
+let nativeHeapFreeSize = hidebug.getNativeHeapFreeSize();
+```
 
 
 ## hidebug.getPss
@@ -89,17 +92,18 @@ Obtains the PSS of this process.
 
 **System capability**: SystemCapability.HiviewDFX.HiProfiler.HiDebug
 
-
 **Return value**
+
 | Type  | Description                     |
 | ------ | ------------------------- |
 | bigint | PSS of the process, in kB.|
 
 
 **Example**
-  ```js
-  let pss = hidebug.getPss();
-  ```
+
+```js
+let pss = hidebug.getPss();
+```
 
 
 ## hidebug.getSharedDirty
@@ -110,17 +114,18 @@ Obtains the size of the shared dirty memory of this process.
 
 **System capability**: SystemCapability.HiviewDFX.HiProfiler.HiDebug
 
-
 **Return value**
+
 | Type  | Description                      |
 | ------ | -------------------------- |
 | bigint | Size of the shared dirty memory of the process, in kB.|
 
 
 **Example**
-  ```js
-  let sharedDirty = hidebug.getSharedDirty();
-  ```
+  
+```js
+let sharedDirty = hidebug.getSharedDirty();
+```
 
 ## hidebug.getPrivateDirty<sup>9+<sup>
 
@@ -130,8 +135,8 @@ Obtains the size of the private dirty memory of this process.
 
 **System capability**: SystemCapability.HiviewDFX.HiProfiler.HiDebug
 
-
 **Return value**
+
 | Type  | Description                      |
 | ------ | -------------------------- |
 | bigint | Size of the private dirty memory of the process, in kB.|
@@ -152,17 +157,18 @@ For example, if the CPU usage is **50%**, **0.5** is returned.
 
 **System capability**: SystemCapability.HiviewDFX.HiProfiler.HiDebug
 
-
 **Return value**
+
 | Type  | Description                      |
 | ------ | -------------------------- |
 | number | CPU usage of the process.|
 
 
 **Example**
-  ```js
-  let cpuUsage = hidebug.getCpuUsage();
-  ```
+
+```js
+let cpuUsage = hidebug.getCpuUsage();
+```
 
 ## hidebug.startProfiling
 
@@ -189,7 +195,6 @@ hidebug.stopProfiling();
 ```
 
 
-
 ## hidebug.stopProfiling
 
 stopProfiling() : void
@@ -245,6 +250,7 @@ This is a system API and cannot be called by third-party applications.
 | serviceid | number | Yes  | ID of the system service. |
 
 **Return value**
+
 | Type  | Description                      |
 | ------ | -------------------------- |
 | string | Absolute path of the file that contains the service information to dump. |

en/application-dev/reference/apis/js-apis-hitracechain.md

@@ -291,6 +291,7 @@ Enables the specified trace flag in the **HiTraceId** instance. This API works i
 **System capability**: SystemCapability.HiviewDFX.HiTrace
 
 **Parameters**
+
 | Name | Type | Mandatory | Description |
 | -------- | -------- | -------- | -------- |
 | id | [HiTraceId](#hitraceid) | Yes | **HiTraceId** instance. |

en/application-dev/reference/apis/js-apis-net-connection.md

@@ -47,7 +47,7 @@ Obtains the default active data network. This API uses a promise to return the r
 
 **System capability**: SystemCapability.Communication.NetManager.Core
 
-**Return Value**
+**Return value**
 
 | Type                             | Description                                 |
 | --------------------------------- | ------------------------------------- |
@@ -92,7 +92,7 @@ Checks whether the default data network is activated. This API uses a promise to
 
 **System capability**: SystemCapability.Communication.NetManager.Core
 
-**Return Value**
+**Return value**
 
 | Type             | Description                                           |
 | ----------------- | ----------------------------------------------- |
@@ -117,6 +117,7 @@ Obtains the list of all active data networks. This API uses an asynchronous call
 **System capability**: SystemCapability.Communication.NetManager.Core
 
 **Parameters**
+
 | Name| Type| Mandatory| Description|
 | -------- | -------- | -------- | -------- |
 | callback | AsyncCallback<Array<[NetHandle](#nethandle)>> | Yes| Callback used to return the result.|
@@ -141,7 +142,8 @@ Obtains the list of all active data networks. This API uses a promise to return
 
 **System capability**: SystemCapability.Communication.NetManager.Core
 
-**Return Value**
+**Return value**
+
 | Type| Description|
 | -------- | -------- |
 | Promise<Array<[NetHandle](#nethandle)>> | Promise used to return the result.|
@@ -198,7 +200,7 @@ Obtains connection properties of the network corresponding to **netHandle**. Thi
 | --------- | ----------------------- | ---- | ---------------- |
 | netHandle | [NetHandle](#nethandle) | Yes  | Handle of the data network.|
 
-**Return Value**
+**Return value**
 
 | Type                                                   | Description                             |
 | ------------------------------------------------------- | --------------------------------- |
@@ -258,7 +260,7 @@ Obtains capability information of the network corresponding to **netHandle**. Th
 | --------- | ----------------------- | ---- | ---------------- |
 | netHandle | [NetHandle](#nethandle) | Yes  | Handle of the data network.|
 
-**Return Value**
+**Return value**
 
 | Type                                         | Description                             |
 | --------------------------------------------- | --------------------------------- |
@@ -285,6 +287,7 @@ Reports connection of the data network. This API uses an asynchronous callback t
 **System capability**: SystemCapability.Communication.NetManager.Core
 
 **Parameters**
+
 | Name| Type| Mandatory| Description|
 | -------- | -------- | -------- | -------- |
 | netHandle | [NetHandle](#nethandle) | Yes| Handle of the data network. For details, see [NetHandle](#nethandle).|
@@ -312,11 +315,13 @@ Reports connection of the data network. This API uses a promise to return the re
 **System capability**: SystemCapability.Communication.NetManager.Core
 
 **Parameters**
+
 | Name| Type| Mandatory| Description|
 | -------- | -------- | -------- | -------- |
 | netHandle | [NetHandle](#nethandle) | Yes| Handle of the data network. For details, see [NetHandle](#nethandle).|
 
-**Return Value**
+**Return value**
+
 | Type| Description|
 | -------- | -------- |
 | Promise<void> | Promise used to return the result.|
@@ -343,6 +348,7 @@ Reports disconnection of the data network. This API uses an asynchronous callbac
 **System capability**: SystemCapability.Communication.NetManager.Core
 
 **Parameters**
+
 | Name| Type| Mandatory| Description|
 | -------- | -------- | -------- | -------- |
 | netHandle | [NetHandle](#nethandle) | Yes| Handle of the data network. For details, see [NetHandle](#nethandle).|
@@ -370,11 +376,13 @@ Reports disconnection of the data network. This API uses a promise to return the
 **System capability**: SystemCapability.Communication.NetManager.Core
 
 **Parameters**
+
 | Name| Type| Mandatory| Description|
 | -------- | -------- | -------- | -------- |
 | netHandle | [NetHandle](#nethandle) | Yes| Handle of the data network. For details, see [NetHandle](#nethandle).|
 
-**Return Value**
+**Return value**
+
 | Type| Description|
 | -------- | -------- |
 | Promise<void> | Promise used to return the result.|
@@ -432,7 +440,7 @@ Resolves the host name by using the default network to obtain all IP addresses.
 | ------ | ------ | ---- | ------------------ |
 | host   | string | Yes  | Host name to be resolved.|
 
-**Return Value**
+**Return value**
 
 | Type                                       | Description                         |
 | ------------------------------------------- | ----------------------------- |
@@ -561,7 +569,7 @@ Obtains the handle of the network specified by **netSpecifier**.
 | netSpecifier | [NetSpecifier](#netspecifier) | No  | Network specifier. If this parameter is not set, the default network is used.                  |
 | timeout      | number                        | No  | Timeout interval for obtaining the network specified by **netSpecifier**. This parameter is valid only when **netSpecifier** is set.|
 
-**Return Value**
+**Return value**
 
 | Type                           | Description                |
 | ------------------------------- | -------------------- |
@@ -829,7 +837,7 @@ Resolves the host name by using the corresponding network to obtain all IP addre
 | ------ | ------ | ---- | ------------------ |
 | host   | string | Yes  | Host name to be resolved.|
 
-**Return Value**
+**Return value**
 
 | Type                                       | Description                         |
 | ------------------------------------------- | ----------------------------- |
@@ -891,7 +899,7 @@ Resolves the host name by using the corresponding network to obtain the first IP
 | ------ | ------ | ---- | ------------------ |
 | host   | string | Yes  | Host name to be resolved.|
 
-**Return Value**
+**Return value**
 
 | Type                               | Description                           |
 | ----------------------------------- | ------------------------------- |