scsi: scsi_debug: Fix a typo

Change a single occurrence of "nad" into "and".

Link: https://lore.kernel.org/r/20220421183023.3462291-8-bvanassche@acm.org
Cc: Douglas Gilbert <dgilbert@interlog.com>
Reviewed-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Acked-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/scsi_debug.c

@@ -4404,7 +4404,7 @@ cleanup:
 
 #define RZONES_DESC_HD 64
 
-/* Report zones depending on start LBA nad reporting options */
+/* Report zones depending on start LBA and reporting options */
 static int resp_report_zones(struct scsi_cmnd *scp,
 			     struct sdebug_dev_info *devip)
 {