trivial: fix typo "kernal" -> "kernel"

Signed-off-by: Uwe Kleine-Koenig <Uwe.Kleine-Koenig@digi.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

fs/proc/nommu.c

@@ -76,7 +76,7 @@ static int nommu_region_show(struct seq_file *m, struct vm_region *region)
 
 /*
  * display a list of all the REGIONs the kernel knows about
- * - nommu kernals have a single flat list
+ * - nommu kernels have a single flat list
  */
 static int nommu_region_list_show(struct seq_file *m, void *_p)
 {