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，使兩者都指向 https://githubschool.github.io/github-games-reliable7。檢查 repository 頁面和 README，確認兩個連結都不再指向 githubschool 的副本；完成的標準是兩個 URL 都指向指定的遊戲副本。

由索引模型根據 Issue 內容生成。