Diogo Lemos enhanced the onboarding experience for developers by streamlining installation documentation in the alphagov/govuk-developer-docs repository. He removed redundant step-by-step instructions from the README, instead directing users to the official gds-cli documentation, which reduced maintenance duplication and improved alignment with primary sources. This approach simplified the onboarding process and ensured consistency across repositories. Diogo applied documentation best practices, technical writing, and Git-based change control, using Markdown to maintain clarity and structure. While the scope of work was focused, the update demonstrated careful attention to documentation quality and cross-repository collaboration, resulting in a more maintainable and user-friendly developer guide.