Worked on enhancing the developer experience for the pksunkara/jj repository by updating documentation related to Fish shell completion. Focused on clarifying that, starting with Fish version 4.1, dynamic completions are enabled by default, eliminating the need for manual configuration. Used Markdown to deliver clear, concise guidance for users migrating from older setups, helping to prevent redundant or conflicting configurations. This documentation update serves as a single source of truth for Fish shell completion behavior, streamlining onboarding and reducing potential support issues. The work emphasized documentation skills and a user-centric approach to technical communication, with attention to accuracy and maintainability.