Hints for openrct2 in contrib

Warnings

• screenshot-download-error
  Error while downloading screenshot from 'https://camo.githubusercontent.com/f513bc551e2c9e04e292724113ea4789726d23921d286f21dad39a6e955b5a56/68747470733a2f2f692e696d6775722e636f6d2f6537434b3553632e706e67': Unexpected status code: 403
  This might be a temporary server issue, or the screenshot is no longer available.