省略号报红问题修改

Signed-off-by: Nwangqing <wangqing136@huawei.com>

zh-cn/application-dev/background-task-management/background-task-dev-guide.md

@@ -130,16 +130,16 @@ ohos.permission.KEEP_BACKGROUND_RUNNING
     ```json
     "module": {
       "package": "com.example.myapplication",
-      // ...
+      
       "abilities": [
-      // ...
+      
         {
           "backgroundModes": [
             "dataTransfer",
             "location",
-            // ...
+            
           ],
-          // ...
+          
           "type": "service"
         }
       ],