Merge pull request #7759 from jtpio/ext-dev-doc-commonjs

Change CommonJS to JavaScript in extension dev doc

docs/source/developer/extension_dev.rst

@@ -39,7 +39,7 @@ A plugin adds a core functionality to the application:
    the default export.
 
    We provide two cookiecutters to create JupyterLab plugin extensions in
-   `CommonJS <https://github.com/jupyterlab/extension-cookiecutter-js>`__ and
+   `JavaScript <https://github.com/jupyterlab/extension-cookiecutter-js>`__ and
    `TypeScript <https://github.com/jupyterlab/extension-cookiecutter-ts>`__.
 
 The default plugins in the JupyterLab application include: