URL in description and README broken

The URL in the repository description and the one in the 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-aaronatworkin

Update the URL in the repository description and the URL in the README. Use https://githubschool.github.io/github-games-aaronatworkin for both, then verify that the README link and repository description point to this copy of the game.

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