Documentation page is out of date

[AdamStrojek]

Hi All, recently in rust 1.85.0 there were stabilization of async closures. I was looking for answers how to use them properly, but unfortunately such information are pretty hard to find. Mostly when looking for async_fn_in_trait or async closures it is redirecting to this page, which is referring mostly to version 1.75.0

I think it is good idea to update or archive this page after 2024 edition release