Felix Eckl focused on documentation quality and developer experience across two open-source repositories over a two-month period. In dotnet/AspNetCore.Docs, Felix addressed a navigation issue by correcting a typo in the IOptionsMonitor documentation link, improving accuracy for users referencing technical content. The work involved careful technical writing and Markdown editing to ensure reliable navigation and traceability, referencing related issues for maintainability. In pmndrs/zustand, Felix updated TypeScript guide links in the README to match a new directory structure, using TypeScript and documentation skills to streamline onboarding and reduce support queries. The contributions were targeted, incremental, and maintained high documentation standards.