scsi: scsi_debug: Fix atomic write enable module param description

scsi: scsi_debug: Fix atomic write enable module param description

[ Upstream commit 1f7d6e2efeedd8f545d3e0e9bf338023bf4ea584 ]

The atomic write enable module param is "atomic_wr", and not
"atomic_write", so fix the module param description.

Fixes: 84f3a3c01d70 ("scsi: scsi_debug: Atomic write support")
Signed-off-by: John Garry <john.g.garry@oracle.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Link: https://patch.msgid.link/20251211100651.9056-1-john.g.garry@oracle.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>