[flake8-simplify] add fix safety section (SIM103)

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

@@ -19,29 +19,40 @@ use crate::fix::snippet::SourceCodeSnippet;
 /// ## Example
 /// Given:
 /// ```python
-/// if x > 0:
-///     return True
-/// else:
-///     return False
+/// def foo(x: int) -> bool:
+///     if x > 0:
+///         return True
+///     else:
+///         return False
 /// ```
 ///
 /// Use instead:
 /// ```python
-/// return x > 0
+/// def foo(x: int) -> bool:
+///     return x > 0
 /// ```
 ///
 /// Or, given:
 /// ```python
-/// if x > 0:
-///     return True
-/// return False
+/// def foo(x: int) -> bool:
+///     if x > 0:
+///         return True
+///     return False
 /// ```
 ///
 /// Use instead:
 /// ```python
-/// return x > 0
+/// def foo(x: int) -> bool:
+///     return x > 0
 /// ```
 ///
+/// ## Fix safety
+///
+/// This fix is marked as unsafe because it may change the program’s behavior if the condition does not
+/// return a proper Boolean. While the fix will try to wrap non-boolean values in a call to bool,
+/// custom implementations of comparison functions like `__eq__` can avoid the bool call and still
+/// lead to altered behavior.
+///
 /// ## References
 /// - [Python documentation: Truth Value Testing](https://docs.python.org/3/library/stdtypes.html#truth-value-testing)
 #[derive(ViolationMetadata)]