During April 2025, Alex contributed to the NixOS/nix repository by improving the accuracy of its documentation. Focusing on Markdown and leveraging strong documentation skills, Alex identified and corrected a typographical error in the string contexts documentation, ensuring the builtin function name matched the actual implementation. This targeted fix addressed a source of user confusion and helped reduce support queries by aligning the documentation with the codebase. Although the scope was limited to documentation and did not involve feature development or code changes, the work demonstrated attention to detail and contributed to the overall maintainability and onboarding efficiency of the project.