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

@@ -5,14 +5,11 @@ annotations_creators:
 language_creators:
 - found
 languages:
-  neen:
-  - en
-  - ne
-  sien:
-  - en
-  - si
+- en
+- ne
+- si
 licenses:
-- cc-by-4-0
+- cc-by-4.0
 multilinguality:
 - translation
 size_categories:
@@ -31,6 +28,9 @@ task_categories:
 - translation
 task_ids: []
 paperswithcode_id: flores
+configs:
+- neen
+- sien
 ---
 
 # Dataset Card for "flores"