Merge r373585 from trunk:

* Remove link to CacheSize as this directive is no longer present.

PR: 38449
Submitted by: Bjoern Voigt <bjoern cs.tu-berlin.de>


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.2.x@373588 13f79535-47bb-0310-9956-ffa450edef68