Fix typos in the selection documentation:
 - over -> cover
 - BONDS -> BOUNDS
Signed-off-by: NLuca Ceresoli <luca@lucaceresoli.net>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab+samsung@kernel.org>