Name the default config `default`
{'login': 'severo', 'id': 1676121, 'node_id': 'MDQ6VXNlcjE2NzYxMjE=', 'avatar_url': 'https://avatars.githubusercontent.com/u/1676121?v=4', 'gravatar_id': '', 'url': 'https://api.github.com/users/severo', 'html_url': 'https://github.com/severo', 'followers_url': 'https://api.github.com/users/severo/followers', 'following_url': 'https://api.github.com/users/severo/following{/other_user}', 'gists_url': 'https://api.github.com/users/severo/gists{/gist_id}', 'starred_url': 'https://api.github.com/users/severo/starred{/owner}{/repo}', 'subscriptions_url': 'https://api.github.com/users/severo/subscriptions', 'organizations_url': 'https://api.github.com/users/severo/orgs', 'repos_url': 'https://api.github.com/users/severo/repos', 'events_url': 'https://api.github.com/users/severo/events{/privacy}', 'received_events_url': 'https://api.github.com/users/severo/received_events', 'type': 'User', 'site_admin': False}
[{'id': 1935892871, 'node_id': 'MDU6TGFiZWwxOTM1ODkyODcx', 'url': 'https://api.github.com/repos/huggingface/datasets/labels/enhancement', 'name': 'enhancement', 'color': 'a2eeef', 'default': True, 'description': 'New feature or request'}, {'id': 1935892912, 'node_id': 'MDU6TGFiZWwxOTM1ODkyOTEy', 'url': 'https://api.github.com/repos/huggingface/datasets/labels/question', 'name': 'question', 'color': 'd876e3', 'default': True, 'description': 'Further information is requested'}]
[]
Currently, if a dataset has no configuration, a default configuration is created from the dataset name.

For example, for a dataset loaded from the hub repository, such as https://huggingface.co/datasets/user/dataset (repo id is `user/dataset`), the default configuration will be `user--dataset`.

It might be easier to handle to set it to `default`, or another reserved word.
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