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-reliable7

更新 repository 描述和 README 中的 URL，使两者都指向 https://githubschool.github.io/github-games-reliable7。检查 repository 页面和 README，确认两个链接都不再指向 githubschool 的副本；完成的标准是两个 URL 都指向指定的游戏副本。

由索引模型根据 Issue 内容生成。