During August 2025, yn_iron contributed to the checkstyle/checkstyle repository by delivering a targeted documentation update for the AnnotationLocation check. Focusing on Java and XML, yn_iron clarified that AnnotationLocation does not enforce annotation placement immediately after Javadoc, addressing a common source of user confusion. The update recommended using the InvalidJavadocPosition check for scenarios requiring stricter annotation placement, thereby improving guidance for developers configuring Checkstyle. This work involved careful code review and precise documentation, resulting in clearer expectations for users and reducing support overhead. The contribution demonstrated a focused approach to enhancing developer experience through improved documentation and technical communication.