修改角色接口增加提示

app/manage/controller/User.php

@@ -189,7 +189,7 @@ class User extends BaseController
         try{
             $role = $this->request->param('role');
             UserModel::where('user_id', $user_id)->update(['role'=>$role]);
-            return success('');
+            return success(lang('system.settingOk'));
         }catch (\Exception $e){
             return error('');
         }