updated changelog for release

changelog.html

@@ -54,12 +54,16 @@ Upcoming changes</a>
 
 <!-- Record your changes in the trunk here. -->
 <div id="trunk" style="display:none"><!--=TRUNK-BEGIN=-->
+<ul class=image>
+  <li class=>
+</ul>
+</div><!--=TRUNK-END=-->
+<h3><a name=v2.0-alpha-3>What's new in 2.0-alpha-3</a> (2016/03/10)</h3>
 <ul class=image>
   <li class="bug">
     Under some conditions Jenkins startup could fail because of incorrectly linked extensions; now recovering more gracefully.
     (<a href-"https://issues.jenkins-ci.org/browse/JENKINS-25440">issue 25440</a>)
 </ul>
-</div><!--=TRUNK-END=-->
 <h3><a name=v1.651>What's new in 1.651</a> (2016/02/28)</h3>
 <ul class=image>
   <li class="rfe">