A couple small corrections to the content negotiation docs:

- The "parent language" matchine is available always, not just
with ForceLanguagePriority

- ForceLanguagePriority defaults to Prefer, not None.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@95354 13f79535-47bb-0310-9956-ffa450edef68