URL in description and README broken

The URL in the repository description and 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-etrujillogithub/

先檢查 repository 描述和 README，也就是 issue 中提到的兩個位置。將這兩處參照都更新為 repository 自身的遊戲 URL，然後確認每個連結都指向 https://githubschool.github.io/github-games-etrujillogithub/。

由索引模型根據 Issue 內容生成。