erp5_workflow_test_data: change the DC testing_interaction_workflow afterValidate script.

bt5/erp5_workflow_test_data/WorkflowTemplateItem/portal_workflow/testing_interaction_workflow/scripts/afterValidate.xml

@@ -51,7 +51,7 @@
         <item>
             <key> <string>_body</string> </key>
             <value> <string>document = sci.object\n
-document.setTitle(\'toto\')\n
+document.setTitle(\'After validate interaction.\')\n
 </string> </value>
         </item>
         <item>