Fix OPUS URLs

rename configs to config_name

add dataset_info in dataset metadata

Align more metadata with other repo types (models,spaces) (#4607)

Remove config names as yaml keys (#4367)

Update datasets task tags to align tags with models (#4067)

Update files from the datasets library (from 1.18.0)

Update files from the datasets library (from 1.7.0)

Update files from the datasets library (from 1.3.0)

Update files from the datasets library (from 1.2.0)