Worked on improving the accuracy and clarity of API documentation for the cpprefjp/site repository, focusing on aligning documentation with actual code behavior to reduce potential misuse. Addressed a documentation bug related to the start_lifetime_as function by clarifying that it returns a pointer to a newly constructed object rather than the input pointer, and corrected a typographical error in the description. Utilized Markdown for precise technical writing and documentation updates, ensuring consistency across the API docs. This work enhanced onboarding for contributors and users by making documentation more reliable and easier to understand, emphasizing attention to detail and documentation best practices.