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>