Fix a typo.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@18402 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/Document/PackingList.py

@@ -129,7 +129,7 @@ class PackingList(Delivery):
       script.
       """
       if rule_id is None and rule_reference is None:
-        warn('Relying on a default order rule is deprecated; ' \
+        warn('Relying on a default delivery rule is deprecated; ' \
              'rule_reference must be specified explicitly.',
              DeprecationWarning)
         rule_reference = 'default_delivery_rule'