Update contribution.html

Author: juliapig

pages/contribution.html

@@ -38,9 +38,9 @@ <h2 class="text-center">Join discussion groups</h2>
 		<a href="https://groups.google.com/forum/#!forum/odata-discussion"><img src="/assets/ODataDiscussionGroup.png" height="125px"></a>
 	</div>
 	<div class="col-md-4">
-		<a href="http://stackoverflow.com/questions/ask?tags=odata"><img src="/assets/MSODataTeam.png" height="125px"></a>
+		<a href="mailto:odatafeedback@microsoft.com"><img src="/assets/MSODataTeam.png" height="125px"></a>
 	</div>
 	<div class="col-md-4">
-		<a href="https://http://olingo.apache.org/support.html"><img src="/assets/ApacheOlingoSupport.png" height="125px" ></a>
+		<a href="http://olingo.apache.org/support.html"><img src="/assets/ApacheOlingoSupport.png" height="125px" ></a>
 	</div>
 </div>