Jongmine Ch focused on modernizing documentation for the techeer-sv/2024-Team-Joe-backend-study repository by expanding the docs with comprehensive chapter titles and navigational links for chapters 07 through 10. Using Markdown and leveraging strong documentation skills, Jongmine enhanced the onboarding experience and improved content discoverability without altering the codebase itself. The work emphasized maintainability and traceability, with well-scoped commits that set a clear foundation for future documentation growth and standardization. Although the contribution was limited to a single feature over one month, the update addressed key usability challenges and established a more organized structure for ongoing team collaboration.