md/raid0: fix warning message for parameter default_layout

[ Upstream commit 3874d73e06c9b9dc15de0b7382fc223986d75571 ]

The message should match the parameter, i.e. raid0.default_layout.

Fixes: c84a1372df92 ("md/raid0: avoid RAID0 data corruption due to layout confusion.")
Cc: NeilBrown <neilb@suse.de>
Reported-by: NIvan Topolsky <doktor.yak@gmail.com>
Signed-off-by: NSong Liu <songliubraving@fb.com>
Signed-off-by: NSasha Levin <sashal@kernel.org>

drivers/md/raid0.c

@@ -158,7 +158,7 @@ static int create_strip_zones(struct mddev *mddev, struct r0conf **private_conf)
 	} else {
 		pr_err("md/raid0:%s: cannot assemble multi-zone RAID0 with default_layout setting\n",
 		       mdname(mddev));
-		pr_err("md/raid0: please set raid.default_layout to 1 or 2\n");
+		pr_err("md/raid0: please set raid0.default_layout to 1 or 2\n");
 		err = -ENOTSUPP;
 		goto abort;
 	}