Doc: Indicate locations of parse_qs, parse_qsl, escape (GH-14828)


Since they have been removed from cgi it's useful to remind people where they
can be found instead.
(cherry picked from commit 1abf54336fd2cb545c453d22dd5501392b3350b2)

Co-authored-by: Simon Willison <swillison@gmail.com>
1 file changed