[QA] Fix wrong bracket in ccs test (elastic#191222)

## Summary

Had a square bracket instead of a curly bracket, hence the request in
the dev console was failing.

x-pack/test/stack_functional_integration/apps/ccs/ccs_console.js

@@ -31,7 +31,7 @@ export default function ({ getService, getPageObjects }) {
       });
       it('it should be able to access remote data', async () => {
         await PageObjects.console.monaco.enterText(
-          '\nGET ftr-remote:makelogs工程-*/_search\n {\n "query": {\n "bool": {\n "must": [\n {"match": {"extension" : "jpg"} \n}\n}\n}\n}\n}'
+          '\nGET ftr-remote:makelogs工程-*/_search\n {\n "query": {\n "bool": {\n "must": [\n {"match": {"extension" : "jpg"} \n}\n]\n}\n}\n}'
         );
         await PageObjects.console.clickPlay();
         await retry.try(async () => {