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-shwethakk/

检查 repository 描述和 README，查找已过时的游戏 URL。将两处引用都替换为 https://githubschool.github.io/github-games-shwethakk/，并确认每个链接都指向此游戏副本。

由索引模型根据 Issue 内容生成。