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-mikel-antolin

检查 repository 描述和 README，找出两个错误的游戏 URL。将两者都替换为 https://githubschool.github.io/github-games-mikel-antolin，然后验证 README 链接和 repository 描述是否指向该 URL。

由索引模型根据 Issue 内容生成。