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-MithunPoojary

检查仓库描述设置和 README，找出两个错误的 URL。将两个引用都更新为仓库的 GitHub Pages URL，然后查看渲染后的 README 和仓库标头，以确认每个链接都指向所请求的游戏副本。

由索引模型根据 Issue 内容生成。