mm/zbud: fix some trivial typos in comments

Signed-off-by: NJianguo Wu <wujianguo@huawei.com>
Cc: Seth Jennings <sjenning@linux.vnet.ibm.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

mm/zbud.c

@@ -16,7 +16,7 @@
  *
  * zbud works by storing compressed pages, or "zpages", together in pairs in a
  * single memory page called a "zbud page".  The first buddy is "left
- * justifed" at the beginning of the zbud page, and the last buddy is "right
+ * justified" at the beginning of the zbud page, and the last buddy is "right
  * justified" at the end of the zbud page.  The benefit is that if either
  * buddy is freed, the freed buddy space, coalesced with whatever slack space
  * that existed between the buddies, results in the largest possible free region
@@ -243,7 +243,7 @@ void zbud_destroy_pool(struct zbud_pool *pool)
  * gfp should not set __GFP_HIGHMEM as highmem pages cannot be used
  * as zbud pool pages.
  *
- * Return: 0 if success and handle is set, otherwise -EINVAL is the size or
+ * Return: 0 if success and handle is set, otherwise -EINVAL if the size or
  * gfp arguments are invalid or -ENOMEM if the pool was unable to allocate
  * a new page.
  */