Tidy up license metadata for google_wellformed_query, newspop, sick (#4378)

* normalise three licenses to be lowercase and include a minor version number as standard

* add missing language_creators tag according to source paper (ACL P13-1158)

* :|

* Specify google_wellformed_quer dataset name in card title

* Add data instance example to google_wellformed_query

Commit from https://github.com/huggingface/datasets/commit/e54ca80dfeabd8337ca99b9cd7b3155d9b0b0489

README.md

@@ -6,7 +6,7 @@ language_creators:
 languages:
 - en
 licenses:
-- cc-by-4
+- cc-by-4.0
 multilinguality:
 - monolingual
 size_categories: