slapos_jio_ui_test: Fix typo in the test testSlapOSJSServer

According to this [code](https://lab.nexedi.com/nexedi/slapos.core/blob/master/master/bt5/slapos_jio/PathTemplateItem/web_page_module/rjs_gadget_erp5_page_slap_computer_view_js.js#L127) . I believe the test `testSlapOSJSServer` currently failed due to a typo. There may have other failing in this test, but at least we can fix this one first.

/reviewed-on nexedi/slapos.core!165

master/bt5/slapos_jio_ui_test/PathTemplateItem/portal_tests/slaposjs_zuite/testSlapOSJSServer.zpt

@@ -480,7 +480,7 @@
 <tr>
   <td>select</td>
   <td>//select[@id="allocation_scope"]</td>
-  <td>Close Forever</td>
+  <td>Closed forever</td>
 </tr>
 
 <tal:block metal:use-macro="here/Zuite_SlapOSCommonTemplate/macros/save" />