URL in description and README broken

The URL in the repository description and README are pointing to githubschool's copy of the game instead of yours.

Please fix both so they point to your copy of the game at https://githubschool.github.io/github-games-czammar/

Open README and the repository description, then compare their game links with the URL given in the issue. Update both references to point to https://githubschool.github.io/github-games-czammar/ and verify that each link targets that copy of the game.

Rédigé par le modèle d'indexation à partir du texte de l'issue.