Worked on the 4C-multiphysics/4C repository to enhance documentation accessibility by addressing a broken Doxygen index link to the User Manual. Focused on improving the reliability and discoverability of high-level documentation, the developer corrected the documentation path, ensuring users and developers could efficiently navigate from the Doxygen landing page to essential resources. This documentation-only change, implemented using Doxygen and documentation management skills, did not affect APIs or runtime behavior, minimizing risk while supporting maintainability. The work contributed to smoother onboarding and reduced support needs by stabilizing documentation navigation, reflecting a careful and targeted approach to technical documentation improvement.