ox-html.el (org-html-scripts): Fix copyright years

* lisp/ox-html.el (org-html-scripts): Fix copyright years.

lisp/ox-html.el

@@ -229,7 +229,7 @@ property on the headline itself.")
 @licstart  The following is the entire license notice for the
 JavaScript code in this tag.
 
-Copyright (C) 2012-2013 Free Software Foundation, Inc.
+Copyright (C) 2012-2017 Free Software Foundation, Inc.
 
 The JavaScript code in this tag is free software: you can
 redistribute it and/or modify it under the terms of the GNU