scripts/lib/wic/help.py: Update Fedora Kickstart URLs

The URLs describing Kickstart are no longer valid and do not redirect to
the correct location.  Update them with the correct location.

Signed-off-by: Jon Mason <jdmason@kudzu.us>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit e5ac75f9)
Signed-off-by: Steve Sakoman <steve@sakoman.com>