PEP 702: Marking deprecations using the type system

Would it make sense to recommend de-indenting multi-line strings, as if inspect.cleandoc() was used? Equivalent to what is done for docstrings.

My use case is deprecating a method in a class:

    @deprecated(
        """
        on_event is deprecated, use lifespan event handlers instead.

        Read more about it in the
        [FastAPI docs for Lifespan Events](https://fastapi.tiangolo.com/advanced/events/).
        """
    )
    def on_event(
        ...

But by using a multiline string I can keep it a bit more tidy, but the text then starts with 8 spaces, so it doesn’t render great in the terminal nor in VS Code tooltips.


I might be approaching it incorrectly, but anyway, throwing the idea here.