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-rd-jan-leygraf/

Open the repository description settings and README, then compare both URLs with the target URL given in the issue. Replace each incorrect link and verify that the description and README now point to the repository's copy of the game.

Written by the indexing model from the issue text.