Updated link to the correct submit flow.

mkt/developers/templates/developers/index.html

@@ -15,7 +15,7 @@
         to all your devices, wherever you are.') }}
         <a href="https://developer.mozilla.org/en-US/apps">Learn more</a>
       </p>
-      <p><a href="{{ url('mkt.developers.submit_apps.1') }}"
+      <p><a href="{{ url('submit.app') }}"
             class="button prominent">{{ loc('Submit an App') }}</a></p>
       </div>
     </div>