[flake8-simplify] Make example error out-of-the-box (SIM110) (#19113)

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## Summary

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

Part of #18972

This PR makes [reimplemented-builtin
(SIM110)](https://docs.astral.sh/ruff/rules/reimplemented-builtin/#reimplemented-builtin-sim110)'s
example error out-of-the-box

[Old example](https://play.ruff.rs/1c192e8b-13f8-4f07-8c35-9dcd516a4a02)
```py
for item in iterable:
    if predicate(item):
        return True
return False
```

[New example](https://play.ruff.rs/f77393ad-20b1-436f-a872-d3bccec7c829)
```py
def foo():
    for item in iterable:
        if predicate(item):
            return True
    return False
```

The "Use instead" section was also updated to reflect the change.

## Test Plan

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

N/A, no functionality/tests affected

crates/ruff_linter/src/rules/flake8_simplify/rules/reimplemented_builtin.rs

@@ -23,6 +23,7 @@ use crate::{Edit, Fix, FixAvailability, Violation};
 ///
 /// ## Example
 /// ```python
+/// def foo():
 ///     for item in iterable:
 ///         if predicate(item):
 ///             return True
@@ -31,6 +32,7 @@ use crate::{Edit, Fix, FixAvailability, Violation};
 ///
 /// Use instead:
 /// ```python
+/// def foo():
 ///     return any(predicate(item) for item in iterable)
 /// ```
 ///