Yume Wikijp contributed to the cpprefjp/site repository by enhancing the documentation for the strtol function. They updated the reference to align with the original Qiita article title and removed author attribution, ensuring the documentation accurately mirrored the linked content. This change, implemented using Markdown and focused on documentation best practices, improved the accuracy and consistency of external references within the C standard library documentation. By addressing potential sources of confusion, Yume’s work helped reduce support overhead for developers relying on cpprefjp/site as a reference. The contribution demonstrated attention to detail and a methodical approach to maintaining technical documentation quality.