Update README.md - UK Government API catalogue

Added UK Government API catalogue.

README.md

@@ -1010,6 +1010,7 @@ API | Description | Auth | HTTPS | CORS |
 ### Government
 API | Description | Auth | HTTPS | CORS |
 |---|---|---|---|---|
+| [UK Government API Catalogue](https://www.api.gov.uk/#uk-public-sector-apis) | UK Government API Catalogue | Yes | Yes | Unknown |
 | [Bank Negara Malaysia Open Data](https://apikijangportal.bnm.gov.my/) | Malaysia Central Bank Open Data | No | Yes | Unknown |
 | [BCLaws](https://www.bclaws.gov.bc.ca/civix/template/complete/api/index.html) | Access to the laws of British Columbia | No | No | Unknown |
 | [Brazil](https://brasilapi.com.br/) | Community driven API for Brazil Public Data | No | Yes | Yes |