DOC: fixed about link (#30855)

Author: TomAugspurger

web/pandas/index.html

@@ -35,7 +35,7 @@ <h5>Documentation</h5>
                     <div class="col-md-4">
                         <h5>Community</h5>
                         <ul>
-                            <li><a href="{{ base_url }}/community/about.html">About pandas</a></li>
+                            <li><a href="{{ base_url }}/about/index.html">About pandas</a></li>
                             <li><a href="https://stackoverflow.com/questions/tagged/pandas">Ask a question</a></li>
                             <li><a href="{{ base_url }}/community/ecosystem.html">Ecosystem</a></li>
                         </ul>