better url

src/about.html

@@ -27,7 +27,7 @@ ul {
         <ul>
             <li>Code: <a href="https://github.com/gorhill/uMatrix/graphs/contributors">µMatrix, <a href="https://github.com/gorhill/httpswitchboard/graphs/contributors">HTTP Switchboard</a>
             <li>Issues: <a href="https://github.com/gorhill/uMatrix/issues?q=is%3Aissue">µMatrix</a>, <a href="https://github.com/gorhill/httpswitchboard/issues?q=is%3Aissue">HTTP Switchboard</a>
-            <li>Translations: <a href="https://crowdin.net/project/umatrix">Crowdin</a>
+            <li>Translations: <a href="https://github.com/gorhill/uMatrix/wiki/Translation-work-contributors">Crowdin</a>
         </ul>
 </ul>