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

@@ -4,18 +4,9 @@ annotations_creators:
 language_creators:
 - crowdsourced
 languages:
-  en:
-  - en
-  de:
-  - de
-  it:
-  - it
-  de_en:
-  - en
-  - de
-  it_en:
-  - en
-  - it
+- de
+- en
+- it
 licenses:
 - unknown
 multilinguality:
@@ -35,6 +26,12 @@ task_ids:
 - parsing
 paperswithcode_id: wizard-of-oz
 pretty_name: Wizard-of-Oz
+configs:
+- de
+- de_en
+- en
+- it
+- it_en
 ---
 
 # Dataset Card Creation Guide