Run rustfmt on nightly to clean up erroneous comments (#5106)

## Summary

This PR runs `rustfmt` with a few nightly options as a one-time fix to
catch some malformatted comments. I ended up just running with:

```toml
condense_wildcard_suffixes = true
edition = "2021"
max_width = 100
normalize_comments = true
normalize_doc_attributes = true
reorder_impl_items = true
unstable_features = true
use_field_init_shorthand = true
```

Since these all seem like reasonable things to fix, so may as well while
I'm here.

crates/ruff_formatter/src/lib.rs

@@ -721,7 +721,6 @@ where
 /// # Ok(())
 /// # }
 /// ```
-///
 #[inline(always)]
 pub fn write<Context>(
     output: &mut dyn Buffer<Context = Context>,