Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
diff --git a/drivers/md/raid10.h b/drivers/md/raid10.h
index 2316ac2..944b110 100644
--- a/drivers/md/raid10.h
+++ b/drivers/md/raid10.h
@@ -17,8 +17,8 @@
 	spinlock_t		device_lock;
 
 	/* geometry */
-	int			near_copies;  /* number of copies layed out raid0 style */
-	int 			far_copies;   /* number of copies layed out
+	int			near_copies;  /* number of copies laid out raid0 style */
+	int 			far_copies;   /* number of copies laid out
 					       * at large strides across drives
 					       */
 	int			far_offset;   /* far_copies are offset by 1 stripe