Leo Bonaz focused on improving the php/doc-en repository by implementing canonical type naming deprecation in PHP documentation to align with PHP 8.5.0 semantics. He updated documentation to promote canonical types, such as int and bool, over deprecated non-canonical cast names, aiming to reduce ambiguity and provide clearer guidance for developers. Working primarily with PHP and XML, Leo ensured that the documentation accurately reflected language changes and improved overall consistency. His work addressed a specific need for clarity in type naming, demonstrating attention to detail and a methodical approach to documentation updates, though the scope was limited to a single feature.