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-krisdehe

Open the repository README and inspect the repository description shown on GitHub. Update both URLs to point to https://githubschool.github.io/github-games-krisdehe, then verify that the README link and description resolve to that address.

索引モデルが issue の本文から書いたものです。