This isn't a major issue by any means, but more of a nitpick on potentially confusing documentation:
In the "Local Mode" section of the Plugin documents here : Working with Traefik Plugins
The source code tree for the plugin and the YAML implementation examples are different. Below both pieces of code, the explaination says "For the above code" but the YAML above code has nothing to do with the description given. It is only relevant to the code tree example. Both examples (The source code tree and the YAML/TOML/CLI implementation examples) should be based on the same Plugin for documentation continuity