update doc

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

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

@@ -26,7 +26,7 @@ This API is defined but not implemented in OpenHarmony 3.1 Release.
 
 | Type  | Description                       |
 | ------ | --------------------------- |
-| bigint | Total size of the native heap memory.|
+| bigint | Total size of the native heap memory, in kB.|
 
 
 **Example**
@@ -49,7 +49,7 @@ This API is defined but not implemented in OpenHarmony 3.1 Release.
 **Return value**
 | Type  | Description                             |
 | ------ | --------------------------------- |
-| bigint | Size of the allocated native heap memory.|
+| bigint | Size of the allocated native heap memory, in kB.|
 
 
 **Example**
@@ -72,7 +72,7 @@ This API is defined but not implemented in OpenHarmony 3.1 Release.
 **Return value**
 | Type  | Description                           |
 | ------ | ------------------------------- |
-| bigint | Size of the free native heap memory.|
+| bigint | Size of the free native heap memory, in kB.|
 
 
 **Example**
@@ -93,7 +93,7 @@ Obtains the PSS of this process.
 **Return value**
 | Type  | Description                     |
 | ------ | ------------------------- |
-| bigint | PSS of the process.|
+| bigint | PSS of the process, in kB.|
 
 
 **Example**
@@ -114,7 +114,7 @@ Obtains the size of the shared dirty memory of this process.
 **Return value**
 | Type  | Description                      |
 | ------ | -------------------------- |
-| bigint | Size of the shared dirty memory of the process.|
+| bigint | Size of the shared dirty memory of the process, in kB.|
 
 
 **Example**
@@ -134,7 +134,7 @@ Obtains the size of the private dirty memory of this process.
 **Return value**
 | Type  | Description                      |
 | ------ | -------------------------- |
-| bigint | Size of the private dirty memory of the process.|
+| bigint | Size of the private dirty memory of the process, in kB.|
 
 
 **Example**

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

@@ -4,7 +4,7 @@ Provides system event logging APIs for system HAP applications.
 
 > **NOTE**<br>
 > - The initial APIs of this module are supported since API version 9. Newly added APIs will be marked with a superscript to indicate their earliest API version.
-> - The APIs of this module are system APIs and cannot be called by third-party applications.
+> - The APIs of this module are system APIs.
 
 
 ## Modules to Import