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-gonzalan6/

Update the repository description and the URL in README, both identified in the issue. Check the current links first, replace them with https://githubschool.github.io/github-games-gonzalan6/, and verify that both locations point to the repository's copy of the game.

Scritto dal modello di indicizzazione a partire dal testo della issue.