install page: update Windows download link on homepage

Author: jvns

layouts/partials/site-root.html

@@ -64,7 +64,7 @@ <h3>Community</h3>
         <td nowrap="true"><a href="https://www.kernel.org/pub/software/scm/git/" class="icon older-releases">Tarballs</a></td>
       </tr>
       <tr>
-        <td nowrap="true"><a href="{{ relURL "downloads/win" }}" class="icon windows" id="alt-link">Windows Build</a></td>
+        <td nowrap="true"><a href="{{ relURL "install/windows" }}" class="icon windows" id="alt-link">Windows Build</a></td>
         <td nowrap="true"><a href="https://github.com/git/git" class="icon source">Source Code</a></td>
       </tr>
     </table>