The PDF and .txt formated documents are only for convenience, they aren't always up to date.
You can try emailing Nick Holland about it.. but it would be easier for you to just check out the HTML FAQ from CVS if you need an offline copy, you can then open it from inside any browser (..lynx/firefox/etc).
$ cvs -d $CVSROOT co -P www/faq
You can find the list of CVS mirrors
here.