Update Transport for Auckland, New Zealand, new link

README.md

@@ -1663,7 +1663,7 @@ API | Description | Auth | HTTPS | CORS |
 | [Tankerkoenig](https://creativecommons.tankerkoenig.de/swagger/) | German realtime gas/diesel prices | `apiKey` | Yes | Yes |
 | [TransitLand](https://www.transit.land/documentation/datastore/api-endpoints.html) | Transit Aggregation | No | Yes | Unknown |
 | [Transport for Atlanta, US](http://www.itsmarta.com/app-developer-resources.aspx) | Marta | No | No | Unknown |
-| [Transport for Auckland, New Zealand](https://api.at.govt.nz/) | Auckland Transport | No | Yes | Unknown |
+| [Transport for Auckland, New Zealand](https://dev-portal.at.govt.nz/) | Auckland Transport | No | Yes | Unknown |
 | [Transport for Belgium](https://api.irail.be/) | The iRail API is a third-party API for Belgian public transport by train | No | Yes | Yes |
 | [Transport for Berlin, Germany](https://github.com/derhuerst/vbb-rest/blob/3/docs/index.md) | Third-party VBB API | No | Yes | Unknown |
 | [Transport for Bordeaux, France](https://opendata.bordeaux-metropole.fr/explore/) | Bordeaux Métropole public transport and more (France) | `apiKey` | Yes | Unknown |