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

@@ -6,21 +6,22 @@ language_creators:
 languages:
 - en
 licenses:
-- cc-by-4-0
+- cc-by-4.0
 multilinguality:
 - monolingual
 pretty_name: SpeechCommands
-size_categories:
-  v0-01:
-    - 10K<n<100K
-  v0-02:
-    - 100K<n<1M
 source_datasets:
 - original
 task_categories:
 - audio-classification
 task_ids:
 - keyword-spotting
+size_categories:
+- 100K<n<1M
+- 10K<n<100
+configs:
+- v0.01
+- v0.02
 ---
 
 # Dataset Card for SpeechCommands