Fernando Gonzalez updated the EGI-Federation/documentation repository by delivering a comprehensive revision of the EGI Check-in Identity Linking and Signup documentation. He focused on improving clarity and usability by replacing outdated images, updating references, and optimizing step-by-step guides to align with the latest identity linking flows. Using Markdown and technical writing skills, Fernando clarified onboarding procedures and benefits, aiming to reduce user friction and support queries. His work ensured that documentation changes were traceable to specific commits, supporting maintainability and collaboration. The depth of the update addressed both visual and procedural accuracy, enhancing the overall onboarding experience for EGI users.