Move #1972 to correct version

changelog.html

@@ -60,11 +60,9 @@ Upcoming changes</a>
 </div><!--=TRUNK-END=-->
 <h3><a name=v1.647>What's new in 1.647</a> (2016/02/04)</h3>
 <ul class=image>
-  <li class=>
-</ul>
-<h3><a name=v1.647>What's new in 1.647</a> (2016/02/03)</h3>
-<ul class=image>
-  <li class=>
+  <li class="bug">
+    Retrieve tool installer metadata from all update sites.
+    (<a href="https://issues.jenkins-ci.org/browse/JENKINS-32328">issue 32328</a>)
 </ul>
 <h3><a name=v1.646>What's new in 1.646</a> (2016/01/25)</h3>
 <ul class=image>
@@ -80,9 +78,6 @@ Upcoming changes</a>
   <li class="rfe">
     Added missing translations for Polish language.
     (<a href="https://github.com/jenkinsci/jenkins/pull/1986">pull 1986</a>)
-  <li class="bug">
-    Retrieve tool installer metadata from all update sites.
-    (<a href="https://issues.jenkins-ci.org/browse/JENKINS-32328">issue 32328</a>)
 </ul>
 <h3><a name=v1.645>What's new in 1.645</a> (2016/01/18)</h3>
 <ul class=image>