adapter-transformers text-generation ml en dataset:HuggingFaceFW/fineweb dataset:HuggingFaceM4/Docmatix arxiv:1910.09700 base_model:HuggingFaceH4/zephyr-7b-beta base_model:adapter:HuggingFaceH4/zephyr-7b-beta license:apache-2.0 region:us