[fix bug 1120725] Update link for users with no Hello target

Author: Cory Price

bedrock/firefox/templates/firefox/hello/start.html

@@ -44,7 +44,7 @@ <h2>{{ _('The easiest way to have a free video conversation with anyone, anywher
       </ol>
       <aside>
         <ul>
-          <li><a rel="external" href="https://support.mozilla.org/kb/firefox-hello-video-and-voice-conversations-online" class="more">{{ _('Need help? Get support here') }}</a></li>
+          <li><a rel="external" href="https://support.mozilla.org/kb/where-firefox-hello-button" class="more">{{ _('Need help? Get support here') }}</a></li>
           <li><a href="{{ url('firefox.hello') }}" class="more">{{ _('Learn all about Hello') }}</a></li>
         </ul>
         <ul>