John Landells updated the mattermost-developer-documentation repository to clarify the policy around bot account file uploads. He authored a focused documentation change in Markdown, specifying that bot accounts may upload files to a channel if they are also added as channel members. This update refined previous restrictions, reducing ambiguity for developers integrating bots with Mattermost. By aligning the documentation with actual platform behavior, John improved the accuracy and usability of the developer guide. His work centered on documentation skills and Markdown, addressing a targeted need rather than broad code changes, and provided a clear, actionable reference for responsible bot integration workflows.