add contact om2m-dev information with link to mailing list page
diff --git a/index.html b/index.html
index 502779c..e0bc91e 100644
--- a/index.html
+++ b/index.html
@@ -90,7 +90,7 @@
</div>
<div class="topic__infos">
<div class="container" style="color:#000;font-size: 16px;">
- Open source project under EPL license. Contact us on: om2m-dev@eclipse.org <!--For operational support contact <a href="http://sensinov.com/">Sensinov SAS--></a>
+ Open source project under EPL license. Contact us on: <a href="https://dev.eclipse.org/mailman/listinfo/om2m-dev"/>om2m-dev@eclipse.org </a> <!--For operational support contact <a href="http://sensinov.com/">Sensinov SAS--></a>
</div>
</div>
</div>