[3.13] IDLE: fix url in config.py comment (GH-119198) (#119199)

IDLE: fix url in config.py comment (GH-119198)
(cherry picked from commit 357f5a1f73684d0c126a5e8f79d76ff3641c4d52)

Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>
1 file changed