Update docs against 15100

Signed-off-by: wusongqing<wusongqing@huawei.com>

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

@@ -36,10 +36,10 @@ Describes the region of the screen to capture.
 
 | Name| Type  | Mandatory| Description                                                        |
 | ------ | ------ | ---- | ------------------------------------------------------------ |
-| left   | number | Yes  | Left boundary of the screen region to capture.|
-| top    | number | Yes  | Top boundary of the screen region to capture.|
-| width  | number | Yes  | Width of the screen region to capture.|
-| height | number | Yes  | Height of the screen region to capture.|
+| left   | number | Yes  | Left boundary of the screen region to capture, in pixels.|
+| top    | number | Yes  | Top boundary of the screen region to capture, in pixels.|
+| width  | number | Yes  | Width of the screen region to capture, in pixels.|
+| height | number | Yes  | Height of the screen region to capture, in pixels.|
 
 
 ## Size
@@ -50,8 +50,8 @@ Describes the size of the screen region to capture.
 
 | Name| Type  | Mandatory| Description                                                        |
 | ------ | ------ | ---- | ------------------------------------------------------------ |
-| width  | number | Yes  | Width of the screen region to capture.|
-| height | number | Yes  | Height of the screen region to capture.|
+| width  | number | Yes  | Width of the screen region to capture, in pixels.|
+| height | number | Yes  | Height of the screen region to capture, in pixels.|
 
 ## screenshot.save
 

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

@@ -64,10 +64,10 @@ Describes the properties of the status bar and navigation bar.
 
 | Name                                  | Type| Readable| Writable| Description                                                        |
 | -------------------------------------- | -------- | ---- | ---- | ------------------------------------------------------------ |
-| statusBarColor                         | string   | No  | Yes  | Background color of the status bar. The value is a hexadecimal RGB or aRGB color value and is case insensitive, for example, `#00FF00` or `#FF00FF00`.|
+| statusBarColor                         | string   | No  | Yes  | Background color of the status bar. The value is a hexadecimal RGB or ARGB color value and is case insensitive, for example, `#00FF00` or `#FF00FF00`. |
 | isStatusBarLightIcon<sup>7+</sup>      | boolean  | No  | Yes  | Whether any icon on the status bar is highlighted.                                  |
 | statusBarContentColor<sup>8+</sup>     | string   | No  | Yes  | Color of the text on the status bar.                                            |
-| navigationBarColor                     | string   | No  | Yes  | Background color of the navigation bar. The value is a hexadecimal RGB or aRGB color value and is case insensitive, for example, `#00FF00` or `#FF00FF00`.|
+| navigationBarColor                     | string   | No  | Yes  | Background color of the navigation bar. The value is a hexadecimal RGB or ARGB color value and is case insensitive, for example, `#00FF00` or `#FF00FF00`. |
 | isNavigationBarLightIcon<sup>7+</sup>  | boolean  | No  | Yes  | Whether any icon on the navigation bar is highlighted.                                  |
 | navigationBarContentColor<sup>8+</sup> | string   | No  | Yes  | Color of the text on the navigation bar.                                            |
 
@@ -84,7 +84,7 @@ Describes the callback for a single system bar.
 | type            | [WindowType](#windowtype7) | Yes  | No  | Type of the system bar whose properties are changed. Only the status bar and navigation bar are supported.|
 | isEnable        | boolean                   | Yes  | No  | Whether the system bar is displayed.                                        |
 | region          | [Rect](#rect7)             | Yes  | No  | Current position and size of the system bar.                                    |
-| backgroundColor | string                    | Yes  | No  | Background color of the system bar. The value is a hexadecimal RGB or aRGB color value and is case insensitive, for example, `#00FF00` or `#FF00FF00`.|
+| backgroundColor | string                    | Yes  | No  | Background color of the system bar. The value is a hexadecimal RGB or ARGB color value and is case insensitive, for example, `#00FF00` or `#FF00FF00`. |
 | contentColor    | string                    | Yes  | No  | Color of the text on the system bar.                                            |
 
 ## SystemBarTintState<sup>8+</sup>
@@ -1661,7 +1661,7 @@ Sets the background color for this window. This API uses an asynchronous callbac
 
 | Name  | Type                     | Mandatory| Description                                                        |
 | -------- | ------------------------- | ---- | ------------------------------------------------------------ |
-| color    | string                    | Yes  | Background color to set. The value is a hexadecimal color code and is case insensitive, for example, `#00FF00` or `#FF00FF00`.|
+| color    | string                    | Yes  | Background color to set. The value is a hexadecimal RGB or ARGB color value and is case insensitive, for example, `#00FF00` or `#FF00FF00`. |
 | callback | AsyncCallback&lt;void&gt; | Yes  | Callback used to return the result.                                                  |
 
 **Example**
@@ -1689,7 +1689,7 @@ Sets the background color for this window. This API uses a promise to return the
 
 | Name| Type  | Mandatory| Description                                                        |
 | ------ | ------ | ---- | ------------------------------------------------------------ |
-| color  | string | Yes  | Background color to set. The value is a hexadecimal color code and is case insensitive, for example, `#00FF00` or `#FF00FF00`.|
+| color  | string | Yes  | Background color to set. The value is a hexadecimal RGB or ARGB color value and is case insensitive, for example, `#00FF00` or `#FF00FF00`. |
 
 **Return value**