Update codeql-for-javascript.rst

Author: jf205

docs/codeql/codeql-language-guides/codeql-for-javascript.rst

@@ -33,3 +33,5 @@ Experiment and learn how to write effective and efficient queries for CodeQL dat
 -  :doc:`Abstract syntax tree classes for working with JavaScript and TypeScript programs <abstract-syntax-tree-classes-for-working-with-javascript-and-typescript-programs>`: CodeQL has a large selection of classes for representing the abstract syntax tree of JavaScript and TypeScript programs.
 
 -  :doc:`Data flow cheat sheet for JavaScript <data-flow-cheat-sheet-for-javascript>`: This article describes parts of the JavaScript libraries commonly used for variant analysis and in data flow queries.
+
+- :doc:`Customizing library models for JavaScript <customizing-library-models-for-ruby>`: You can model frameworks and libraries that your codebase depends on using data extensions and publish them as CodeQL model packs.