Add changelog record for PR #1460

changelog.html

@@ -94,6 +94,10 @@ Upcoming changes</a>
   <li class=rfe>
     Improve error reporting when channel closed during build.
     (<a href="https://issues.jenkins-ci.org/browse/JENKINS-26411">issue 26411</a>)
+  <li class=bug>
+    Fixed CodeMirror issue with height and re-enabled syntax highlighting in shell build step.
+    (<a href="https://issues.jenkins-ci.org/browse/JENKINS-25455">issue 25455</a>,
+     <a href="https://issues.jenkins-ci.org/browse/JENKINS-23151">issue 23151</a>)
 </ul>
 </div><!--=TRUNK-END=-->