Some cleanup on the 2.0 FAQ carried over from 1.3. May be irrelevant soon,

Some cleanup on the 2.0 FAQ carried over from 1.3. May be irrelevant soon,
or it may give us a better starting point for 2.0 improvements.
Fixed a bunch of <p>...</p> matches.
Removed 1.3 upgrade recommendation.
Fixed some entity encodings.
Updated a bunch of links that moved from core.html to mpm_common.html.
Fixed a few bad/stale links.
Fixed a decrement that was interfering with comment.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@88376 13f79535-47bb-0310-9956-ffa450edef68