Updates 家长端服务/接口文档.md

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@@ -75,11 +75,13 @@ POST https://api.boxfish.cn/parents/family/mobile/accept/{mobile}/{code}?access_
 | mobile | String | **必须**.被绑定用户手机号 |
 | code | String | **必须**.短信验证码 |
 
+返回值
 ```
-返回值: 200  OK
-    错误时: 400 
+成功
+ http code 200
+失败
    {
-             "message": "您已是该手机号对应账号的家长"
+    "message": "失败具体原因！"
    }
 ```