adds license information for DailyDialog.
{'login': 'aditya2211', 'id': 11574558, 'node_id': 'MDQ6VXNlcjExNTc0NTU4', 'avatar_url': 'https://avatars.githubusercontent.com/u/11574558?v=4', 'gravatar_id': '', 'url': 'https://api.github.com/users/aditya2211', 'html_url': 'https://github.com/aditya2211', 'followers_url': 'https://api.github.com/users/aditya2211/followers', 'following_url': 'https://api.github.com/users/aditya2211/following{/other_user}', 'gists_url': 'https://api.github.com/users/aditya2211/gists{/gist_id}', 'starred_url': 'https://api.github.com/users/aditya2211/starred{/owner}{/repo}', 'subscriptions_url': 'https://api.github.com/users/aditya2211/subscriptions', 'organizations_url': 'https://api.github.com/users/aditya2211/orgs', 'repos_url': 'https://api.github.com/users/aditya2211/repos', 'events_url': 'https://api.github.com/users/aditya2211/events{/privacy}', 'received_events_url': 'https://api.github.com/users/aditya2211/received_events', 'type': 'User', 'site_admin': False}
[]
[]
Thanks! Can you also add it as metadata in the YAML block at the top of the file?

Should be in the form:

```
licenses:
- cc-by-sa-4.0
``` seems like we need to add all the other tags ? 
```       
if error_messages:
>           raise ValueError("\n".join(error_messages))
E           ValueError: The following issues have been found in the dataset cards:
E           YAML tags:
E           __init__() missing 8 required positional arguments: 'annotations_creators', 'language_creators', 'languages', 'multilinguality', 'size_categories', 'source_datasets', 'task_categories', and 'task_ids'
``` I'll let @lhoestq or @yjernite chime in (and maybe complete/merge). Thanks! Looks like CircleCI has an incident. Let's wait for it to be working again and make sure the CI is green The remaining error is unrelated to this PR, merging
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