Add a note regarding ignore-without-code

crates/ruff_linter/src/rules/pygrep_hooks/rules/blanket_type_ignore.rs

@@ -20,6 +20,10 @@ use ruff_text_size::TextSize;
 /// maintain, as the annotation does not clarify which warnings are intended
 /// to be suppressed.
 ///
+/// Note: Mypy supports a [built-in setting](https://mypy.readthedocs.io/en/stable/error_code_list2.html#check-that-type-ignore-include-an-error-code-ignore-without-code)
+/// to enforce that all `type: ignore` annotations include an error code, akin
+/// to enabling this rule.
+///
 /// ## Example
 /// ```python
 /// from foo import secrets  # type: ignore
@@ -31,7 +35,7 @@ use ruff_text_size::TextSize;
 /// ```
 ///
 /// ## References
-/// - [mypy](https://mypy.readthedocs.io/en/stable/common_issues.html#spurious-errors-and-locally-silencing-the-checker)
+/// - [mypy: Silencing the checker](https://mypy.readthedocs.io/en/stable/common_issues.html#spurious-errors-and-locally-silencing-the-checker)
 #[violation]
 pub struct BlanketTypeIgnore;