Dennis Pan updated the release calendar documentation in the rundeck/docs repository to accurately reflect the new 5.19.0 release schedule. Focusing on documentation quality and version control, Dennis identified and corrected a misdated release year, ensuring that both internal teams and external stakeholders had access to consistent and reliable planning information. The work involved a targeted, low-risk change using Markdown, resulting in a single-commit update that minimized disruption while improving alignment between the product roadmap and published documentation. This contribution enhanced release readiness and reduced the risk of miscommunication, demonstrating careful attention to detail and a methodical approach to documentation maintenance.