JS: Fix missing alert marker that's actually reported

Author: asgerf

javascript/ql/test/query-tests/Security/CWE-312/CleartextStorage.js

@@ -3,5 +3,5 @@ var express = require('express');
 var app = express();
 app.get('/remember-password', function (req, res) {
   let pw = req.param("current_password");
-  res.cookie("password", pw); // $ MISSING: Alert - Setting a cookie value with cleartext sensitive data.
+  res.cookie("password", pw); // $ Alert[js/clear-text-storage-of-sensitive-data] - Setting a cookie value with cleartext sensitive data.
 });