Telling the user they can disable an option if they want is not the
much useful. Describe what it is good for instead.

The text was derived from Mauro's email.
Signed-off-by: NJiri Slaby <jslaby@suse.cz>
Cc: Mauro Carvalho Chehab <mchehab@redhat.com>
Cc: Hans Petter Selasky <hselasky@c2i.net>
Acked-by: NRandy Dunlap <randy.dunlap@oracle.com>
Acked-by: NHans Petter Selasky <hselasky@c2i.net>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>