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

@@ -6,10 +6,8 @@ language_creators:
 languages:
 - en
 licenses:
-  wi:
-  - other-wi-license
-  locness:
-  - other-locness-license
+- other-locness-license
+- other-wi-license
 multilinguality:
 - monolingual
 - other-language-learner
@@ -22,9 +20,10 @@ task_categories:
 task_ids:
 - text2text-generation-other-grammatical-error-correction
 paperswithcode_id: locness-corpus
-pretty_name:
-  wi: Cambridge English Write & Improve
-  locness: LOCNESS
+pretty_name: Cambridge English Write & Improve + LOCNESS
+configs:
+- locness
+- wi
 ---
 
 # Dataset Card for Cambridge English Write & Improve + LOCNESS Dataset