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-Udayshankarg

更新仓库描述和 README，使两个 URL 都指向 https://githubschool.github.io/github-games-Udayshankarg，而不是 githubschool 的副本。编辑后检查仓库页面和 README，确认两个链接都使用请求的 URL。

由索引模型根据 Issue 内容生成。