DrBacchus says Fix-a-docs-bug

PR 50396
Historical reasons for using IP-based virtualhosting no longer deserve
to be featured in our docs.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.2.x@1066435 13f79535-47bb-0310-9956-ffa450edef68