erp5_workflow_test_data: correct a type error.

bt5/erp5_workflow_test_data/TestTemplateItem/portal_components/test.erp5.testWorkflowAndDCWorkflow.py

@@ -184,7 +184,7 @@ class TestERP5WorkflowMixin(ERP5TypeTestCase):
     self.assertEqual(new_object.getTitle(), "After validate interaction.")
     self.assertEqual(self.getStateFor(new_object), 'validated')
     new_object.setTitle("tictic")
-    self.assertEqual(new_object.getDescription(), "'Interaction of setTitle executed. setTitle is appeared in after validate script.")
+    self.assertEqual(new_object.getDescription(), "Interaction of setTitle executed. setTitle is appeared in after validate script.")
 
   def test_12_testIsTransitionPossible(self):
     new_object = self.getTestObject()