[pycodestyle] Make example error out-of-the-box (E272) (#19191)

<!--
Thank you for contributing to Ruff/ty! To help us out with reviewing,
please consider the following:

- Does this pull request include a summary of the change? (See below.)
- Does this pull request include a descriptive title? (Please prefix
with `[ty]` for ty pull
  requests.)
- Does this pull request include references to any relevant issues?
-->

## Summary

<!-- What's the purpose of the change? What does it do, and why? -->

Part of #18972

This PR makes [multiple-spaces-before-keyword
(E272)](https://docs.astral.sh/ruff/rules/multiple-spaces-before-keyword/#multiple-spaces-before-keyword-e272)'s
example error out-of-the-box. Since `True` is also a keyword, the old
example raises `E271` instead.

[Old example](https://play.ruff.rs/23ec3774-5038-471c-be3f-1c1e36f85cbb)
```py
True  and False
```

[New example](https://play.ruff.rs/d77432e2-fd99-4db2-9cd0-bc08675c0aca)
```py
x  and y
```

The "Use instead" section was also updated similarly.

## Test Plan

<!-- How was it tested? -->

N/A, no functionality/tests affected

crates/ruff_linter/src/rules/pycodestyle/rules/logical_lines/whitespace_around_keywords.rs

@@ -43,12 +43,12 @@ impl AlwaysFixableViolation for MultipleSpacesAfterKeyword {
 ///
 /// ## Example
 /// ```python
-/// True  and False
+/// x  and y
 /// ```
 ///
 /// Use instead:
 /// ```python
-/// True and False
+/// x and y
 /// ```
 #[derive(ViolationMetadata)]
 pub(crate) struct MultipleSpacesBeforeKeyword;