update transformation


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1563739 13f79535-47bb-0310-9956-ffa450edef68
ignore external references in the sitemap


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1563740 13f79535-47bb-0310-9956-ffa450edef68