Update index.html

on-device-ai/index.html

@@ -2,4 +2,5 @@
   <li><a href="chat.html">Chat</a></li>
   <li><a href="check_coc.html">Check a comment against a code of Conduct</a></li>
   <li><a href="form_assistant.html">Assist in filling out a form</a></li>
+  <li><a href="issue_tagging.html">Classify an issue comment as Bug, Feature Request, etc. and assign a tag to the issue before submitting it</a></li>
 </ul>