Fix typo in Localize spelling

and add a comment to explain deprecation.

product/ERP5Type/Accessor/WorkflowState.py

@@ -94,8 +94,8 @@ class TranslatedGetter(Getter):
       wf = portal.portal_workflow.getWorkflowById(self._key)
       state_id = wf._getWorkflowStateOf(instance, id_only=1)
       warn('Translated workflow state getters, such as %s are deprecated' %
-            self._id, DeprecationWarning)
-      return portal.localizer.erp5_ui.gettext(state_id).encode('utf8')
+            self._id, DeprecationWarning) # And why so XXXX ?
+      return portal.Localizer.erp5_ui.gettext(state_id).encode('utf8')
 
     psyco.bind(__call__)