change event discription.

Signed-off-by: Njiangminyang <jiangminyang@huawei.com>

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

@@ -325,8 +325,8 @@ Listens for camera status changes. This method uses a callback to get camera sta
 
 | Name     | Type                   | Mandatory | Description                                          |
 | :------- | :--------------------- | :-------- | :--------------------------------------------------- |
-| type     | string                 | Yes       | Name of the event to listen for. It should be 'cameraStatus', which is  the camera status event.   |
-| callback | Callback<CameraStatusInfo\> | Yes  | Callback used to get the camera status change. |
+| type     | string                 | Yes       | Camera status event.                                 |
+| callback | Callback<CameraStatusInfo\> | Yes  | Callback used to get the camera status change.       |
 
 **Example**
 
@@ -1091,7 +1091,7 @@ Listens for **CameraInput** errors. This method uses a callback to get errors.
 
 | Name     | Type                   | Mandatory | Description                                     |
 | :------- | :--------------------- | :-------- | :-----------------------------------------------|
-| type     | string                 | Yes       | Name of the event to listen for. It should be 'error', which is the CameraInputError event.                |
+| type     | string                 | Yes       | Camera input error event.                       |
 | callback | Callback<CameraInputError\> | Yes  | Callback used to get the camera input errors.   |
 
 **Example**
@@ -2140,7 +2140,7 @@ Listens for **PreviewOutput** errors. This method uses a callback to get errors.
 
 | Name     | Type                   | Mandatory | Description                                     |
 | :------- | :--------------------- | :-------- | :-----------------------------------------------|
-| type     | string                 | Yes       | Name of the event to listen for. It should be 'error', which is the PreviewOutputError event.                    |
+| type     | string                 | Yes       | Preview output error event.                     |
 | callback | Callback<PreviewOutputError\> | Yes  | Callback used to get the preview output errors. |
 
 **Example**
@@ -2503,7 +2503,7 @@ Listens for **PhotoOutput** errors. This method uses a callback to get errors.
 
 | Name     | Type                   | Mandatory | Description                                     |
 | :------- | :--------------------- | :-------- | :-----------------------------------------------|
-| type     | string                 | Yes       | Name of the event to listen for. It should be 'error', which is the PhotoOutputError event.                |
+| type     | string                 | Yes       | Photo output error event.                       |
 | callback | Callback<PhotoOutputError\> | Yes  | Callback used to get the photo output errors.   |
 
 **Example**
@@ -2786,7 +2786,7 @@ Listens for **VideoOutput** errors. This method uses a callback to get errors.
 
 | Name     | Type                   | Mandatory | Description                                     |
 | :------- | :--------------------- | :-------- | :-----------------------------------------------|
-| type     | string                 | Yes       | Name of the event to listen for. It should be 'error', which is the VideoOutputError event.                |
+| type     | string                 | Yes       | Video output error event.                       |
 | callback | Callback<VideoOutputError\> | Yes  | Callback used to get the video output errors.   |
 
 **Example**