Add Open Data, Poland Goverment (#1920)

* Add open data, Poland goverment

* restore formatting in part of the document readme

* update info about CORS

README.md

@@ -700,6 +700,7 @@ API | Description | Auth | HTTPS | CORS |
 | [Open Government, Mexico](https://www.inegi.org.mx/datos/) | Mexican Statistical Government Open Data | No | Yes | Unknown |
 | [Open Government, New Zealand](https://www.data.govt.nz/) | New Zealand Government Open Data | No | Yes | Unknown |
 | [Open Government, Peru](https://www.datosabiertos.gob.pe/) | Peru Government Open Data | No | Yes | Unknown |
+| [Open Government, Poland](https://dane.gov.pl/en) | Poland Government Open Data | No | Yes | Yes |
 | [Open Government, Romania](http://data.gov.ro/) | Romania Government Open Data | No | No | Unknown |
 | [Open Government, Russia](https://data.gov.ru/?language=en) | Open Data Portal Russia | `apiKey` | No | Unknown |
 | [Open Government, Saudi Arabia](https://data.gov.sa) | Saudi Arabia Government Open Data | No | Yes | Unknown |