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_python_formatter/src/module/mod.rs

@@ -24,6 +24,7 @@ impl FormatRule<Mod, PyFormatContext<'_>> for FormatMod {
 
 impl<'ast> AsFormat<PyFormatContext<'ast>> for Mod {
     type Format<'a> = FormatRefWithRule<'a, Mod, FormatMod, PyFormatContext<'ast>>;
+
     fn format(&self) -> Self::Format<'_> {
         FormatRefWithRule::new(self, FormatMod::default())
     }
@@ -31,6 +32,7 @@ impl<'ast> AsFormat<PyFormatContext<'ast>> for Mod {
 
 impl<'ast> IntoFormat<PyFormatContext<'ast>> for Mod {
     type Format = FormatOwnedWithRule<Mod, FormatMod, PyFormatContext<'ast>>;
+
     fn into_format(self) -> Self::Format {
         FormatOwnedWithRule::new(self, FormatMod::default())
     }