Worked on improving documentation quality in the apache/echarts-doc repository by addressing a specific typographical error in the ECharts instance API reference. Focused on enhancing clarity for developers, the contribution involved correcting the term “Opional” to “Optional” in the lazyUpdate option, ensuring the documentation accurately reflected the intended API usage. The change was implemented using Markdown, demonstrating careful attention to detail and a commitment to clear technical communication. By isolating the update in a single, review-friendly commit, the work reduced potential confusion for users and contributed to a more professional and accessible documentation experience for the ECharts developer community.