Minor Fix tool push_to_hub

[keetrap]

Fixed issue where passing the token directly in the push_to_hub function was not working.

[aymeric-roucher]

Does this not create a problem by exposing private tokens in the space? (I' not sure what metadata_update does)

[keetrap]

No, it will not expose token. Token is required for this but we are not passing it.

def metadata_update(
    repo_id: str,
    metadata: Dict,
    *,
    repo_type: Optional[str] = None,
    overwrite: bool = False,
    token: Optional[str] = None,
    commit_message: Optional[str] = None,
    commit_description: Optional[str] = None,
    revision: Optional[str] = None,
    create_pr: bool = False,
    parent_commit: Optional[str] = None,
) -> str:
    """
    Updates the metadata in the README.md of a repository on the Hugging Face Hub.
    If the README.md file doesn't exist yet, a new one is created with metadata and an
    the default ModelCard or DatasetCard template. For `space` repo, an error is thrown
    as a Space cannot exist without a `README.md` file.

[aymeric-roucher]

LGTM! Thank you for the fix and the explanation @keetrap ! 😃