update docs

Signed-off-by: NAnnie_wang <annie.wangli@huawei.com>

en/application-dev/reference/apis/js-apis-data-storage.md

@@ -7,7 +7,7 @@ Lightweight storage provides applications with data processing capability and al
 >
 > The initial APIs of this module are supported since API version 6. Newly added APIs will be marked with a superscript to indicate their earliest API version.
 >
-> 
+
 
 
 ## Modules to Import
@@ -22,15 +22,15 @@ import dataStorage from '@ohos.data.storage';
 
 | Name| Type| Readable| Writable| Description|
 | -------- | -------- | -------- | -------- | -------- |
-| MAX_KEY_LENGTH | string | Yes| No| Maximum length of a key. It is 80 bytes.|
-| MAX_VALUE_LENGTH | string | Yes| No| Maximum length of a value. It is 8192 bytes.|
+| MAX_KEY_LENGTH | string | Yes| No| Maximum length of a key. It must be less than 80 bytes.|
+| MAX_VALUE_LENGTH | string | Yes| No| Maximum length of a value. It must be less than 8192 bytes.|
 
 
 ## dataStorage.getStorageSync
 
 getStorageSync(path: string): Storage
 
-Reads the specified file and load its data to the **Storage** instance for data operations.
+Reads the specified file and loads its data to the **Storage** instance for data operations.
 
 **System capability**: SystemCapability.DistributedDataManager.Preferences.Core
 

en/application-dev/reference/apis/js-apis-system-storage.md

@@ -2,9 +2,8 @@
 
 >  **NOTE**<br/>
 >
-> - The APIs of this module are no longer maintained since API Version 6, and you are advised to use [`@ohos.data.storage`](js-apis-data-storage.md).
+> The APIs of this module are no longer maintained since API Version 6, and you are advised to use [`@ohos.data.storage`](js-apis-data-storage.md). 
 >
-> - The initial APIs of this module are supported since API version 3. Newly added APIs will be marked with a superscript to indicate their earliest API version.
 
 
 ## Modules to Import
@@ -68,7 +67,7 @@ Sets the value in the cache based on the specified key.
 | Name| Type| Mandatory| Description|
 | -------- | -------- | -------- | -------- |
 | key | string | Yes| Key of the data to set.|
-| value | string | Yes| New value to set. The maximum length is 128 bytes.|
+| value | string | Yes| New value to set. The length must be less than 128 bytes.|
 | success | Function | No| Called when **storage.set()** is successful.|
 | fail | Function | No| Called when **storage.set()** fails. In the callback, **data** indicates the error information, and **code** indicates the error code.|
 | complete | Function | No| Called when **storage.set()** is complete.|