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

@@ -4,51 +4,12 @@ annotations_creators:
 language_creators:
 - found
 languages:
-  ar-to-en:
-  - ar
-  - en
-  ar-to-es:
-  - ar
-  - es
-  ar-to-fr:
-  - ar
-  - fr
-  ar-to-ru:
-  - ar
-  - ru
-  ar-to-zh:
-  - ar
-  - zh
-  en-to-es:
-  - en
-  - es
-  en-to-fr:
-  - en
-  - fr
-  en-to-ru:
-  - en
-  - ru
-  en-to-zh:
-  - en
-  - zh
-  es-to-fr:
-  - es
-  - fr
-  es-to-ru:
-  - es
-  - ru
-  es-to-zh:
-  - es
-  - zh
-  fr-to-ru:
-  - fr
-  - ru
-  fr-to-zh:
-  - fr
-  - zh
-  ru-to-zh:
-  - ru
-  - zh
+- ar
+- en
+- es
+- fr
+- ru
+- zh
 licenses:
 - unknown
 multilinguality:
@@ -62,6 +23,22 @@ task_categories:
 task_ids: []
 paperswithcode_id: null
 pretty_name: UnGa
+configs:
+- ar-to-en
+- ar-to-es
+- ar-to-fr
+- ar-to-ru
+- ar-to-zh
+- en-to-es
+- en-to-fr
+- en-to-ru
+- en-to-zh
+- es-to-fr
+- es-to-ru
+- es-to-zh
+- fr-to-ru
+- fr-to-zh
+- ru-to-zh
 ---
 
 # Dataset Card for [Dataset Name]