Fix some typos in the <default> and <syntax> and remove the

<default>none</default>

Suggested by:  Mikhail Filimonov <mvf@uniyar.ac.ru>


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@98350 13f79535-47bb-0310-9956-ffa450edef68