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-amitpng

检查仓库描述和 README，然后将两个 URL 与请求的目标 https://githubschool.github.io/github-games-amitpng 进行比较。当两个链接都指向此仓库的游戏副本时，即表示完成。

由索引模型根据 Issue 内容生成。