style: pre-commit fixes

Author: pre-commit-ci[bot]

src/zarr/storage/local.py

@@ -226,7 +226,9 @@ async def list(self) -> AsyncGenerator[str, None]:
 
     async def list_prefix(self, prefix: str) -> AsyncGenerator[str, None]:
         # docstring inherited
-        to_strip = (self.root / prefix).as_posix() + "/"  # TODO: fixme in https://github.com/zarr-developers/zarr-python/issues/2438
+        to_strip = (
+            (self.root / prefix).as_posix() + "/"
+        )  # TODO: fixme in https://github.com/zarr-developers/zarr-python/issues/2438
         for p in (self.root / prefix).rglob("*"):
             if p.is_file():
                 yield p.as_posix().replace(to_strip, "")