Adjust the repo which is now on gitlab

frontend/index.html

@@ -197,7 +197,7 @@
 
     <!-- Footer -->
     <footer class="text-center">
-        <span class="text-muted">Created by the <a href="https://cloudron.io" target="_blank">Cloudron</a> team <a href="https://github.com/nebulade/surfer" target="_blank">hosted on Github</a></span>
+        <span class="text-muted">Created by the <a href="https://cloudron.io" target="_blank">Cloudron</a> team. <a href="https://git.cloudron.io/cloudron/surfer" target="_blank">Get the code</a></span>
     </footer>
 
     <script src="/_admin/js/jquery-1.12.1.min.js"></script>