mm: docs: fixup punctuation

so that kernel-doc will properly recognize the parameter and function
descriptions.

Link: http://lkml.kernel.org/r/1516700871-22279-2-git-send-email-rppt@linux.vnet.ibm.com
Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/mm/nommu.c b/mm/nommu.c
index 4b9864b..ebb6e61 100644
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -1836,7 +1836,7 @@ int __access_remote_vm(struct task_struct *tsk, struct mm_struct *mm,
 }
 
 /**
- * @access_remote_vm - access another process' address space
+ * access_remote_vm - access another process' address space
  * @mm:		the mm_struct of the target address space
  * @addr:	start address to access
  * @buf:	source or destination buffer