Arnaud Lefebvre contributed targeted documentation improvements to the CleverCloud/documentation repository, focusing on enhancing clarity and consistency for developer onboarding. He identified and corrected heading capitalization in the reference-environment-variables.md file, aligning the documentation with established standards and reducing potential confusion for downstream teams. Using Markdown and leveraging his documentation skills, Arnaud implemented the change through a single, well-scoped Git commit, ensuring precise traceability and facilitating easier audits and reviews. While the scope of work was narrow, the update addressed a specific usability issue, supporting faster onboarding and reducing support queries related to environment variable references within the documentation.