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-tinalung/

首先检查 repository 描述和 README，其中标识了两个错误的 URL。将两个链接都更新为 https://githubschool.github.io/github-games-tinalung/，并验证 repository 页面和 README 现在都指向该目标。

由索引模型根据 Issue 内容生成。