HaiYan focused on improving documentation quality in the spring-projects/spring-security repository, specifically addressing logout handling terminology. Over the course of a month, HaiYan identified and corrected an inconsistency by updating all references from 'Directives' to 'Directive' in logout.adoc, ensuring alignment with the API and reducing potential confusion for developers. This work involved careful review and disciplined documentation maintenance, including editing, committing, and providing an explicit sign-off. Utilizing skills in Java, Kotlin, and technical documentation, HaiYan’s contribution enhanced the clarity and consistency of the project’s documentation, supporting better developer experience and minimizing future support queries related to logout flows.