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-ShaunRBK/

更新 README 中的 URL 和仓库描述，将 https://githubschool.github.io/github-games-ShaunRBK/ 作为目标。确认这两个位置都指向此游戏副本，并且不再保留对 githubschool 副本的任何引用。

由索引模型根据 Issue 内容生成。