Update index.html

Author: muzihuaner

Diff for: index.html

@@ -828,7 +828,7 @@ <h6>快捷链接</h6>
                   <li><a href="#about">关于</a></li>
                   <li><a href="#gallery">业务</a></li>
                   <li><a href="#pricing">媒体</a></li>
-                  <li><a href="https://exmail.qq.com/login">企业邮箱</a></li>
+                  <li><a href="https://huangetech.feishu.cn/mail">企业邮箱</a></li>
                 </ul>
               </div>
             </div>