Greg McNaughton contributed to the facebook/stylex repository by enhancing its documentation to streamline local development and onboarding. He updated the README files for the Webpack and Next.js example projects, adding an 'example:' prefix to sample commands to ensure alignment with package.json scripts. This adjustment prevented missing script errors and improved script discoverability for new contributors. Greg’s work focused on Markdown documentation and readme updates, demonstrating attention to detail in frontend tooling contexts. While the scope was limited to a single feature over one month, the changes addressed a concrete developer pain point and improved the repository’s documentation standards.