Ollzhas focused on enhancing documentation quality for the grafana/mimir repository, targeting the Query Engine and Ingester components. Over the course of a month, Ollzhas delivered a set of Markdown-based improvements that addressed a typo, repaired broken cross-links to prevent navigation errors, and expanded guidance on fuzz test data usage. The work emphasized technical writing and testing skills, aiming to improve readability, accessibility, and onboarding for new users. By refining documentation structure and content, Ollzhas helped reduce support overhead and provided clearer testing instructions, resulting in more reliable usage of the engine and smoother integration for contributors.