erp5_corporate_identity_test: output conversion server url

bt5/erp5_corporate_identity_test/SkinTemplateItem/portal_skins/erp5_corporate_identity_test/Zuite_setConversionServerUrl.py

@@ -10,4 +10,4 @@ Set preference for template test to textarea
 conversion_server_url_list = context.portal_preferences.getPreferredDocumentConversionServerUrlList() or ["https://cloudooo.erp5.net"]
 system_preference = context.portal_preferences.default_system_preference
 system_preference.setPreferredDocumentConversionServerUrlList(conversion_server_url_list)
-return "Conversion Server Url set."
+return context.portal_preferences.getPreferredDocumentConversionServerUrl()