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-cohendr

Inspect the README and the repository description settings to find both existing game URLs. Update each reference to https://githubschool.github.io/github-games-cohendr, then verify that the README link and repository homepage resolve to that address.

Written by the indexing model from the issue text.