resolve id conflict with dom based xss test ql

Author: 5idg5

javascript/ql/test/query-tests/Security/CWE-079/DomBasedXss/XssWithAdditionalSources.ql

@@ -5,7 +5,7 @@
  * @kind path-problem
  * @problem.severity error
  * @precision high
- * @id js/xss
+ * @id js/xss-additional-sources-dom-test
  * @tags security
  *       external/cwe/cwe-079
  *       external/cwe/cwe-116