mm: fix memory.c incorrect kernel-doc

Fix mm/memory.c incorrect kernel-doc function notation:

  Warning(mm/memory.c:3718): Cannot understand  * @access_remote_vm - access another process' address space
   on line 3718 - I thought it was a doc line
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

mm/memory.c

@@ -3715,7 +3715,7 @@ static 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