fix black mistake on pyright comment

Author: lev-blit

lib/ts_utils/metadata.py

@@ -362,9 +362,8 @@ def update_metadata(distribution: str, **new_values: object) -> tomlkit.TOMLDocu
         raise NoSuchStubError(f"Typeshed has no stubs for {distribution!r}!") from None
     data.update(new_values)  # pyright: ignore[reportUnknownMemberType] # tomlkit.TOMLDocument.update is partially typed
     for key in list(data.keys()):
-        data[key.replace("_", "-")] = data.pop(
-            key
-        )  # pyright: ignore[reportUnknownMemberType] # tomlkit.TOMLDocument.pop is partially typed
+        new_key = key.replace("_", "-")  # pyright: ignore[reportUnknownMemberType] # tomlkit.TOMLDocument.keys is partially typed
+        data[new_key] = data.pop(key)  # pyright: ignore[reportUnknownMemberType] # tomlkit.TOMLDocument.pop is partially typed
     with path.open("w", encoding="UTF-8") as file:
         tomlkit.dump(data, file)  # pyright: ignore[reportUnknownMemberType] # tomlkit.dump has partially unknown Mapping type
     return data