During October 2025, Mitja Saihonen focused on improving the Lumi-supercomputer/lumi-userguide repository by addressing a documentation issue affecting the Dataset-as-a-Service (DaaS) data catalogue. Mitja identified and corrected an incorrect URL in the Markdown-based documentation, ensuring users are directed to the proper portal for dataset search and access. The fix was implemented with careful attention to documentation accuracy and was validated through lightweight quality assurance to confirm reliable access. By leveraging skills in documentation and Markdown, Mitja’s work enhanced the reliability of user guidance, reduced potential confusion, and contributed to a smoother experience for users navigating the DaaS resources.