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-schaowork/

更新仓库描述和 README，使两个 URL 都指向 https://githubschool.github.io/github-games-schaowork/。验证仓库描述和 README 中显示的链接，然后确认它们都不再指向 githubschool 的副本。

由索引模型根据 Issue 内容生成。