add the user balance

@@ -431,7 +431,7 @@ class UsersController extends HomeBaseController{
      * @url /portal/users/getUserBalance
      * @method GET
      *
-     * @param name:users_id type:String require:1 default:无 other: desc:用户id
+     * @param name:user_id type:String require:1 default:无 other: desc:用户id
      *
      */
     public function getUserBalance(){