Remove config names as yaml keys (#4367)

* validate YAML part

* fix bad YAML keys

* don't have config names as yaml keys

* style

* Remove hacking license tags when mirroring datasets on the Hub

* fix test

* fix style

* more fixes

* remove dots in QA column mapping keys

Commit from https://github.com/huggingface/datasets/commit/3f3013441e4af9bf4efa752b5e6e184a588b7a80

README.md

@@ -19,7 +19,7 @@ task_ids:
 - sentiment-classification
 - sentiment-scoring
 paperswithcode_id: null
-pretty_name: 'TurkishMovieSentiment: This dataset contains turkish movie reviews-'
+pretty_name: 'TurkishMovieSentiment: This dataset contains turkish movie reviews.'
 ---
 
 # Dataset Card for TurkishMovieSentiment: This dataset contains turkish movie reviews.