Fix function doc string error found by Jeremy.

git-svn-id: svn://bind10.isc.org/svn/bind10/trunk@1639 e5f2f494-b856-4b98-b285-d166d9295462

src/bin/xfrout/xfrout.py.in

@@ -352,7 +352,7 @@ class XfroutServer:
 
 
     def shutdown(self):
-        ''' shutdown the xfrin process. the thread which is doing xfrin should be
+        ''' shutdown the xfrout process. The thread which is doing zone transfer-out should be
         terminated.
         '''
         self._shutdown_event.set()