fix quote

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@11710 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/CMFActivity/ActivityTool.py

@@ -335,7 +335,7 @@ class ActivityTool (Folder, UniqueObject):
       
     security.declareProtected(Permissions.manage_properties, 'isSubscribed')
     def isSubscribed(self):
-        """"
+        """
         return True, if we are subscribed to TimerService.
         Otherwise return False.
         """