!6832 【misc软件服务子系统】screenlock\wallpapaer 部件示例代码修改

Merge pull request !6832 from wangdongqi/master

zh-cn/application-dev/reference/apis/js-apis-screen-lock.md

@@ -302,7 +302,7 @@ sendScreenLockEvent(event: String, parameter: number): Promise<boolean>
 **示例**：
   
   ```js
-  screenlock.sendScreenLockEvent('unlockScreenResult', 0).then((err, result) => {
+  screenlock.sendScreenLockEvent('unlockScreenResult', 0).then((result) => {
       console.log('sending result:' + result);
   });
   ```

zh-cn/application-dev/reference/apis/js-apis-wallpaper.md

@@ -638,7 +638,7 @@ getPixelMap(wallpaperType: WallpaperType): Promise<image.PixelMap>
 **示例：**
   
   ```js
-  wallpaper.getPixelMap(WALLPAPER_SYSTEM).then((data) => {
+  wallpaper.getPixelMap(wallpaper.WallpaperType.WALLPAPER_SYSTEM).then((data) => {
       console.info('wallpaperXTS ===> testGetPixelMapPromiseSystem data : ' + data);
       console.info('wallpaperXTS ===> testGetPixelMapPromiseSystem data : ' + JSON.stringify(data));
   }).catch((err) => {