João Bruni focused on improving the Semgrep documentation by addressing a critical gap in the upgrade instructions within the semgrep-docs repository. He identified that the documented pipx command for upgrading Semgrep was incorrect and updated it from 'install --upgrade' to the correct 'upgrade' command, ensuring users follow the proper procedure. This change, implemented using Markdown and leveraging his documentation skills, was validated against existing upgrade workflows to minimize user confusion and support requests. The update was committed with traceability to issue #2241, reflecting a targeted, quality-driven approach to documentation maintenance rather than broad feature development during this period.