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-isralduke

Check the repository description and README for the two incorrect links. Compare both with the target URL given in the issue, then verify that each points to the repository's own game copy; pull request #3 is linked and merged, so first confirm whether the work is already complete.

Vom Indexierungsmodell aus dem Issue-Text verfasst.