prettier docs

ERRORCODES.md

@@ -61,6 +61,8 @@ The following warnings are currently emitted by default:
 | Y056 | Do not call methods such as `.append()`, `.extend()` or `.remove()` on `__all__`. Different type checkers have varying levels of support for calling these methods on `__all__`. Use `+=` instead, which is known to be supported by all major type checkers.
 | Y057 | Do not use `typing.ByteString` or `collections.abc.ByteString`. These types have unclear semantics, and are deprecated; use  `typing_extensions.Buffer` or a union such as `bytes \| bytearray \| memoryview` instead. See [PEP 688](https://peps.python.org/pep-0688/) for more details.
 
+## Warnings disabled by default
+
 The following error codes are also provided, but are disabled by default due to
 the risk of false-positive errors. To enable these error codes, use
 `--extend-select={code1,code2,...}` on the command line or in your flake8