Worked on improving developer documentation for the facebook/pyrefly repository, focusing on correcting a misrepresented Python error example related to unsupported operations. Addressed the issue by updating the documentation to use a more accurate code snippet, ensuring that the error triggered aligns with Python’s actual behavior. Used Python and Markdown to validate and document the fix, running local tests with the pyrefly CLI and updating verification steps for clarity. This work enhanced the reliability of onboarding materials, reduced potential confusion for new contributors, and contributed to a more robust documentation workflow, ultimately supporting better user experience and project maintainability.