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-rickmanJeff/

检查 repository 描述和 README 中的 URL。将这两处引用更新为 repository 的 GitHub Pages 游戏 URL，然后验证描述和 README 链接是否指向预期的副本。

由索引模型根据 Issue 内容生成。