Adds missing word

git-svn-id: https://svn.apache.org/repos/asf/struts/site@1523936 13f79535-47bb-0310-9956-ffa450edef68
Renames links to documentation

git-svn-id: https://svn.apache.org/repos/asf/struts/site@1523937 13f79535-47bb-0310-9956-ffa450edef68