add a link to tell people how to submit a repo

Author: Michelle Noorali

frontend/src/app/footer/footer.component.html

@@ -7,7 +7,7 @@
   <app-footer-list [title]="'Contribute'">
     <li><a class="reverse" target="_blank" href="https://github.com/helm/hub">Helm Hub</a></li>
     <li><a class="reverse" target="_blank" href="https://github.com/helm/monocular">Monocular</a></li>
-    <li><a class="reverse" target="_blank" href="https://github.com/helm/helm">Helm</a></li>
+    <li><a class="reverse" target="_blank" href="https://github.com/helm/hub/blob/master/Repositories.md#process-to-add-a-repository">Submit a Repo</a></li>
   </app-footer-list>
   <app-footer-list [title]="'Follow'">
     <li><a class="reverse" target="_blank" href="http://slack.k8s.io/#helm-users">Slack</a></li>