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-seanchen2019

打开 README 和仓库的描述设置，然后将两个链接与 issue 的目标 URL 进行比较。当 README 链接和仓库描述链接都指向仓库的 GitHub Pages 游戏 URL 时，即表示完成。

由索引模型根据 Issue 内容生成。