Add listing example to explainer page

listings/lp-output/index.html

@@ -10,8 +10,8 @@
         </p>
         <p>
             This domain isn't meant to be accessed via a browser,
-            but to provide lists of Communities to <a href="https://getsession.org/" target="_blank">Session Messenger</a>, 
-            and looks something <a href="./listings" target="_blank">like this</a>.
+            but to provide lists of Communities to <a href="https://getsession.org/" target="_blank">Session Messenger</a>,
+            and looks something <a href="./listings" target="_blank">like this</a> or <a href="./listing/oxen" target="_blank">this</a>.
         </p>
         <p>
             If that doesn't faze you, click these links to read more about what this service does: