Changelog entry.

CHANGES.md

@@ -8,6 +8,7 @@ Fixed Issues:
 * [#13118](http://dev.ckeditor.com/ticket/13118): Fixed: The [`editor.getSelectedHtml()`](http://docs.ckeditor.com/#!/api/CKEDITOR.editor-method-getSelectedHtml) method throws error when called in the source mode.
 * Toolbar configurators:
   * [#13185](http://dev.ckeditor.com/ticket/13185): Fixed: Wrong position of the suggestion box if there is not enough space below the caret.
+  * [#13138](http://dev.ckeditor.com/ticket/13138): Fixed: The "Toggle empty elements" button label is unclear.
 
 ## CKEditor 4.5 Beta