refactor the text about config.layout contents.

Initiated by: Gustavo Delfino <gdelfino-ml@gdsolutions.com.ve>
Reviewed by: Cliff Woolley


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@101238 13f79535-47bb-0310-9956-ffa450edef68