Rebuild tag list for prettify.js

   ./build.sh prettify
+ manual updating of prettify.js based on "list_for_prettify.txt"

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1923001 13f79535-47bb-0310-9956-ffa450edef68

Author: Christophe Jaillet