Update documentation links

Fix #1977

gns3server/templates/index.html

@@ -5,7 +5,7 @@
 </h3>
 <ul>
     <li><a href="https://gns3.com">Website</a></li>
-    <li><a href="http://api.gns3.net">API documentation</a></li>
+    <li><a href="http://docs.gns3.com">Documentation</a></li>
 </ul>
-<p>If you are looking for uploading the IOU. You can since 1.4 upload them directly from the client see: <a href="https://gns3.com/support/docs/how-to-configure-non-native-io-3">this documentation</a>.</p>
+<p>If you are looking for uploading the IOU. You can since 1.4 upload them directly from the client see: <a href="http://docs.gns3.com/1PKfYwR78QP_Z3jqxBQ1pdy6SsqM27qhvdCvSmIizRh4">this documentation</a>.</p>
 {% endblock %}