block: fix blk_rq_map_integrity_sg kernel-doc

Fix the documentation to match the new function signature.

Fixes: 76c313f6 ("blk-integrity: improved sg segment mapping")
Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20240922141800.3622319-1-kbusch@meta.comSigned-off-by: Jens Axboe <axboe@kernel.dk>

block/blk-integrity.c

@@ -56,8 +56,7 @@ int blk_rq_count_integrity_sg(struct request_queue *q, struct bio *bio)
 
 /**
  * blk_rq_map_integrity_sg - Map integrity metadata into a scatterlist
- * @q:		request queue
- * @bio:	bio with integrity metadata attached
+ * @rq:		request to map
  * @sglist:	target scatterlist
  *
  * Description: Map the integrity vectors in request into a