Update link text for messages page in index.html

Signed-off-by: Shan Wenxiao <seanoj_noreply@yeah.net>

Author: PythonSmall-Q

index.html

@@ -48,7 +48,7 @@
                         <a class="nav-link" href="#About">关于</a>
                     </li>
                     <li class="nav-item">
-                        <a class="nav-link" href="messages.html">短消息 WebUI
+                        <a class="nav-link" href="messages.html">短消息在线看
                             <span class="badge bg-warning text-dark ms-1">Alpha</span>
                         </a>
                     </li>