kernfs: bring names in comments in line with code

Fix two stragglers in the comments of the below rename operation.

Fixes: adc5e8b58f48 ("kernfs: drop s_ prefix from kernfs_node members")
Acked-by: Tejun Heo <[e-mail]>
Signed-off-by: Willem de Bruijn <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

fs/kernfs/dir.c

···
 	return error;
 }
 
-/* Relationship between s_mode and the DT_xxx types */
+/* Relationship between mode and the DT_xxx types */
 static inline unsigned char dt_type(struct kernfs_node *kn)
 {
 	return (kn->mode >> 12) & 15;

include/linux/kernfs.h

···
  * kernfs node is represented by single kernfs_node.  Most fields are
  * private to kernfs and shouldn't be accessed directly by kernfs users.
  *
- * As long as s_count reference is held, the kernfs_node itself is
+ * As long as count reference is held, the kernfs_node itself is
  * accessible.  Dereferencing elem or any other outer entity requires
  * active reference.
  */