Julian Vetter focused on improving the reliability of upgrade documentation in the xcp-ng-org repository, addressing a key pain point for users navigating the upgrade process. He identified and removed a dead link in the upgrade docs, replacing it with a current resource to ensure users have access to accurate guidance. Working primarily with Markdown and leveraging his documentation skills, Julian enhanced the overall quality and usability of the upgrade flow. This targeted fix reduced potential confusion and support requests, demonstrating careful attention to user experience. The work was limited in scope but addressed a concrete issue affecting downstream upgrade success.