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_ast/src/source_code/comment_ranges.rs

@@ -25,8 +25,8 @@ impl Debug for CommentRanges {
 }
 
 impl<'a> IntoIterator for &'a CommentRanges {
-    type Item = &'a TextRange;
     type IntoIter = std::slice::Iter<'a, TextRange>;
+    type Item = &'a TextRange;
 
     fn into_iter(self) -> Self::IntoIter {
         self.raw.iter()

crates/ruff_python_ast/src/source_code/line_index.rs

@@ -245,12 +245,11 @@ impl IndexKind {
 pub struct OneIndexed(NonZeroUsize);
 
 impl OneIndexed {
+    /// The largest value that can be represented by this integer type
+    pub const MAX: Self = unwrap(Self::new(usize::MAX));
     // SAFETY: These constants are being initialized with non-zero values
     /// The smallest value that can be represented by this integer type.
     pub const MIN: Self = unwrap(Self::new(1));
-    /// The largest value that can be represented by this integer type
-    pub const MAX: Self = unwrap(Self::new(usize::MAX));
-
     pub const ONE: NonZeroUsize = unwrap(NonZeroUsize::new(1));
 
     /// Creates a non-zero if the given value is not zero.