md: bcache: Fix spelling of 'acquire'

acqurie -> acquire
Signed-off-by: Ding Senjie <dingsenjie@yulong.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Coly Li <colyli@suse.de>
Link: https://lore.kernel.org/r/20211020143812.6403-2-colyli@suse.deSigned-off-by: Jens Axboe <axboe@kernel.dk>

drivers/md/bcache/super.c

@@ -2750,7 +2750,7 @@ static int bcache_reboot(struct notifier_block *n, unsigned long code, void *x)
 		 * The reason bch_register_lock is not held to call
 		 * bch_cache_set_stop() and bcache_device_stop() is to
 		 * avoid potential deadlock during reboot, because cache
-		 * set or bcache device stopping process will acqurie
+		 * set or bcache device stopping process will acquire
 		 * bch_register_lock too.
 		 *
 		 * We are safe here because bcache_is_reboot sets to