Make Python Doc Executable

Just noticed that pydantic made their doc executable (https://docs.pydantic.dev/latest/).

Following the JS, I was expecting pyodide to be used, and it was: view-source: https://samuelcolvin.github.io/mkdocs-run-code/run_code_main...

But on top of it, it's wrapped in this project specially made for mkdocs (an alternative to sphinx).

Very cool.