Add link to Instagram

Change-Id: If2e3c81a9023d0105f8eaff82c910e5666bdb5d3
Signed-off-by: Mickael Istria <mistria@redhat.com>

2019-09/content/en_index.html

diff --git a/2019-09/content/en_index.html b/2019-09/content/en_index.html
index 486fc88..17633ff 100644
--- a/2019-09/content/en_index.html
+++ b/2019-09/content/en_index.html
@@ -171,6 +171,12 @@
           </a>
         </li>
         <li>
+          <a class="fa-stack fa-xl" href="https://www.instagram.com/eclipsejavaide/">
+            <i class="fa fa-circle fa-stack-2x"></i>
+            <i class="fa fa-instagram fa-stack-1x white"></i>
+          </a>
+        </li>
+        <li>
           <a class="fa-stack fa-xl" href="https://www.facebook.com/eclipse.org/">
             <i class="fa fa-circle fa-stack-2x"></i>
             <i class="fa fa-facebook fa-stack-1x white"></i>