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

@@ -4,26 +4,17 @@ annotations_creators:
 language_creators:
 - crowdsourced
 languages:
-  kannada:
-  - en
-  - kn
-  malayalam:
-  - en
-  - ml
-  tamil:
-  - en
-  - ta
+- en
+- kn
+- ml
+- ta
 licenses:
-- cc-by-4-0
+- cc-by-4.0
 multilinguality:
 - multilingual
 size_categories:
-  kannada:
-  - 1K<n<10K
-  malayalam:
-  - 10K<n<100K
-  tamil:
-  - 10K<n<100K
+- 10K<n<100K
+- 1K<n<10K
 source_datasets:
 - original
 task_categories:
@@ -32,6 +23,10 @@ task_ids:
 - text-classification-other-offensive-language
 paperswithcode_id: null
 pretty_name: Offenseval Dravidian
+configs:
+- kannada
+- malayalam
+- tamil
 ---
 
 # Dataset Card for Offenseval Dravidian