core::fmt::Formatter does not mention write! macro

[ErikMcClure]

Location

Formatter::write_fmt

Summary

The docs for write_fmt in Formatter do not line up with the docs for write_fmt in the Write trait. The write trait warns you that you should be using the write! macro, but the method in Formatter doesn't. If you are implementing core::fmt::Debug and call write_fmt on the provided Formatter object directly, and use the wrong arguments, the rust-analyzer error will use Formatter docs, which will mislead the user into simply wrapping the arguments via format_args! instead of using a write! macro.

[Noratrieb]

sounds reasonable, feel free to make a PR adding it.