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-gsfd2000

Start by opening the repository README and the repository description settings, then compare both URLs with the requested game URL. Done means both locations point to https://githubschool.github.io/github-games-gsfd2000 and the links resolve correctly.

索引モデルが issue の本文から書いたものです。