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

@@ -67,7 +67,7 @@ languages:
 - lt
 - lb
 - mk
-- other-ms-brunei (Brunei Darus-)
+- other-ms-brunei (Brunei Darus.)
 - ms
 - ml
 - mt