Docstring for get_gguf_model is inaccurate

[ahuang11]

I don't think it matches the signature.

get_gguf_model(
    name: str,
    label: str,
    settings: FuncchainSettings,
) -> Path:
    """
    Gather GGUF model from huggingface/TheBloke

    possible input:
    - DiscoLM-mixtral-8x7b-v2-GGUF
    - TheBloke/DiscoLM-mixtral-8x7b-v2
    - discolm-mixtral-8x7b-v2
    ...

    Raises ModelNotFound(name) error in case of no result.
    """