erp5_web_renderjs_ui_test: fix syntax error

bt5/erp5_web_renderjs_ui_test/PathTemplateItem/portal_tests/renderjs_ui_zuite/relationfield_zuite/testSimpleMultiRelationField.xml

@@ -243,6 +243,7 @@ xxx wait for implementation of catch reponse from erp5 after ajax\n
 <tr>\n
   <td>pause</td>\n
   <td>3000</td>\n
+  <td></td>\n
 </tr>\n
 \n
 <tr>\n