FROMGIT: block: mq-deadline: Add a word in a source code comment

Add the missing word "and".

Cc: Damien Le Moal <dlemoal@kernel.org>
Suggested-by: Damien Le Moal <dlemoal@kernel.org>
Fixes: 945ffb60 ("mq-deadline: add blk-mq adaptation of the deadline IO scheduler")
Change-Id: Ic8e16b13886815418a7d60d310a040ce48d5ebe7
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Damien Le Moal <dlemoal@kernel.org>
Link: https://lore.kernel.org/r/20230517174230.897144-2-bvanassche@acm.org


Signed-off-by: Jens Axboe <axboe@kernel.dk>
Bug: 275581839
(cherry picked from commit 45b46b6f https://git.kernel.dk/cgit/linux/

)
Signed-off-by: Bart Van Assche <bvanassche@google.com>