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/expression/expr_bin_op.rs

@@ -142,6 +142,7 @@ impl<'ast> AsFormat<PyFormatContext<'ast>> for Operator {
 
 impl<'ast> IntoFormat<PyFormatContext<'ast>> for Operator {
     type Format = FormatOwnedWithRule<Operator, FormatOperator, PyFormatContext<'ast>>;
+
     fn into_format(self) -> Self::Format {
         FormatOwnedWithRule::new(self, FormatOperator)
     }

crates/ruff_python_formatter/src/expression/mod.rs

@@ -163,6 +163,7 @@ impl NeedsParentheses for Expr {
 
 impl<'ast> AsFormat<PyFormatContext<'ast>> for Expr {
     type Format<'a> = FormatRefWithRule<'a, Expr, FormatExpr, PyFormatContext<'ast>>;
+
     fn format(&self) -> Self::Format<'_> {
         FormatRefWithRule::new(self, FormatExpr::default())
     }
@@ -170,6 +171,7 @@ impl<'ast> AsFormat<PyFormatContext<'ast>> for Expr {
 
 impl<'ast> IntoFormat<PyFormatContext<'ast>> for Expr {
     type Format = FormatOwnedWithRule<Expr, FormatExpr, PyFormatContext<'ast>>;
+
     fn into_format(self) -> Self::Format {
         FormatOwnedWithRule::new(self, FormatExpr::default())
     }