实现修改昵称功能（就随便做了）

src/helper/apis.js

@@ -5,6 +5,7 @@ export const apis = {
   login: backEndBaseURL + "/user/login",
   getProfile: backEndBaseURL + "/user/me",
   uploadAvatar: backEndBaseURL + "/user/uploadAvatar",
+  updateNickname: backEndBaseURL + "/user/updateNickname",
 
   submitMessage: backEndBaseURL + "/post/submit",
   listEssence: backEndBaseURL + "/post/listPublished?page=1",