accounting: fix searching catalog for validation_state=Validated

correct case is *validated*

bt5/erp5_accounting/SkinTemplateItem/portal_skins/erp5_accounting/Preference_viewAccounting/my_preferred_accounting_transaction_source_section.xml

@@ -269,7 +269,7 @@
       <dictionary>
         <item>
             <key> <string>_text</string> </key>
-            <value> <string>python: [(\'\', \'\')] + [(x.getTitle(), x.getRelativeUrl()) for x in context.portal_catalog( default_group_uid=context.portal_categories.getCategoryUid(context.getPreferredAccountingTransactionSectionCategory(\'portal_categories\')), portal_type=\'Organisation\', validation_state=\'Validated\')]</string> </value>
+            <value> <string>python: [(\'\', \'\')] + [(x.getTitle(), x.getRelativeUrl()) for x in context.portal_catalog( default_group_uid=context.portal_categories.getCategoryUid(context.getPreferredAccountingTransactionSectionCategory(\'portal_categories\')), portal_type=\'Organisation\', validation_state=\'validated\')]</string> </value>
         </item>
       </dictionary>
     </pickle>