Docs: Adding link for Google Developer Groups

Bug: 25762311
Change-Id: I43afc56ae1f5715bc17c77a63ed5694a3d381992
diff --git a/src/source/community.jd b/src/source/community.jd
index 663da64..9c4a95d 100644
--- a/src/source/community.jd
+++ b/src/source/community.jd
@@ -108,7 +108,8 @@
 <h5>Developer resources</h5>
 <a href="http://developer.android.com/">Developer.android.com</a><br>
 <a href="http://developer.android.com/support.html">Developer support</a><br>
-<a href="http://android-developers.blogspot.com/">Android developers blog</a>
+<a href="http://android-developers.blogspot.com/">Android developers blog</a><br>
+<a href="https://developers.google.com/groups/">Google Developer Groups (GDGs)</a>
 <p></p>
 
 <h5>Training</h5>