[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

mypy/plugins/dataclasses.py

@@ -966,7 +966,7 @@ def dataclass_tag_callback(ctx: ClassDefContext) -> None:
 def dataclass_class_maker_callback(ctx: ClassDefContext) -> bool:
     """Hooks into the class typechecking process to add support for dataclasses."""
     if any(i.is_named_tuple for i in ctx.cls.info.mro):
-        ctx.api.fail(f"A NamedTuple cannot be a dataclass.", ctx=ctx.cls.info)
+        ctx.api.fail("A NamedTuple cannot be a dataclass.", ctx=ctx.cls.info)
         return True
     transformer = DataclassTransformer(
         ctx.cls, ctx.reason, _get_transform_spec(ctx.reason), ctx.api