Update index.html

Author: knolleary

index.html

@@ -126,7 +126,7 @@ <h3>Who's using Node-RED?</h3>
             <li><a href="/users/go-iot"><img src="users/go-iot/Logo-large.png"/></a></li>
             <li><a href="/users/spiritai"><img src="users/spiritai/spiritai.png"/></a></li>
             </ul>
-            <p style="text-align:center;"><a href="http://localhost:4000/about/community/">Want to feature here? Let us know!</a></p>
+            <p style="text-align:center;"><a href="/about/community/">Want to feature here? Let us know!</a></p>
         </div>
     </div>
 </div>