Update sidebar.html

Author: nrios14

_includes/sidebar.html

@@ -129,6 +129,7 @@ <h3>Hosted Billing</h3>
       <ul>
         <li class="is-overview"><a href="/user/billing-overview/">Overview</a></li>
         <li><a href="/user/billing-autorefill/">Auto-refill</a></li>
+        <li><a href="/user/plan-sharing/">Plan Sharing</a></li>
         <li><a href="/user/billing-faq/">FAQ</a></li>
       </ul>