Add some missing hyper links to directives.
Remove some <var> in <syntax> to be more consistant with the rest of the doc.
Remove a duplicated traling ".".

[skip ci]

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1885833 13f79535-47bb-0310-9956-ffa450edef68
1 file changed