blk-settings: fix function parameter kernel-doc notation

Fix kernel-doc notation in blk-settings.c::blk_queue_max_discard_sectors().

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

block/blk-settings.c

diff --git a/block/blk-settings.c b/block/blk-settings.c
index e0695bc..66d4aa8 100644
--- a/block/blk-settings.c
+++ b/block/blk-settings.c
@@ -242,7 +242,7 @@
 /**
  * blk_queue_max_discard_sectors - set max sectors for a single discard
  * @q:  the request queue for the device
- * @max_discard: maximum number of sectors to discard
+ * @max_discard_sectors: maximum number of sectors to discard
  **/
 void blk_queue_max_discard_sectors(struct request_queue *q,
 		unsigned int max_discard_sectors)