Fixed typo error, introduced by someone else.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@45064 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Configurator/Document/PurchaseTradeConditionConfiguratorItem.py

@@ -69,7 +69,7 @@ class PurchaseTradeConditionConfiguratorItem(ConfiguratorItemMixin, XMLObject):
 
     purchase_trade_condition = portal.purchase_trade_condition_module.newContent(
                                            portal_type="Purchase Trade Condition",
-                                           referece=self.getReference(),
+                                           reference=self.getReference(),
                                            title=self.getTitle(),
                                            effective_date=DateTime() - 1,
                                            expiration_date=DateTime() + 10 * 365)