update doc

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

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

@@ -1345,8 +1345,8 @@ This is a system API.
 
 | Name  | Type                                                       | Mandatory| Description                                                        |
 | -------- | ----------------------------------------------------------- | ---- | ------------------------------------------------------------ |
-| slotId   | number                                                      | Yes  | Card slot ID.<br>- **0**: card slot 1<br>- **1**: card slot 2                      |
-| callback | AsyncCallback&lt;[CallWaitingStatus](#callwaitingstatus7)\> | Yes  | Callback used to return the result.<br><br>- **0**: Call waiting is disabled.<br>- **1**: Call waiting is enabled.|
+| slotId   | number                                                      | Yes  | Card slot ID.<br>- **0**: card slot 1<br>- **1**: card slot 2               |
+| callback | AsyncCallback&lt;[CallWaitingStatus](#callwaitingstatus7)\> | Yes  | Callback used to return the result.<br>- **0**: Call waiting is disabled.<br>- **1**: Call waiting is enabled.|
 
 **Example**
 

en/application-dev/reference/apis/js-apis-i18n.md

 # Internationalization – I18N
 
- This module provides system-related or enhanced I18N capabilities, such as locale management, phone number formatting, and calendar, through supplementary I18N APIs that are not defined in ECMA 402.
+The I18N module provides system-related or enhanced I18N capabilities, such as locale management, phone number formatting, and calendar, through supplementary I18N APIs that are not defined in ECMA 402.
 The [Intl](js-apis-intl.md) module provides basic I18N capabilities through the standard I18N APIs defined in ECMA 402. It works with the I18N module to provide a complete suite of I18N capabilities.
 
 >  **NOTE**
->  - The initial APIs of this module are supported since API version 7. Newly added APIs will be marked with a superscript to indicate their earliest API version.
->
->  - This module provides system-related or enhanced I18N capabilities, such as locale management, phone number formatting, and calendar, through supplementary I18N APIs that are not defined in ECMA 402. For details about the basic I18N capabilities, see [Intl](js-apis-intl.md).
-
+>  The initial APIs of this module are supported since API version 7. Newly added APIs will be marked with a superscript to indicate their earliest API version.
 
 ## Modules to Import