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-bradseames

更新 repository 描述和 README 中的 URL，使兩者都指向 https://githubschool.github.io/github-games-bradseames。將目前的連結與要求的目的地進行比較，然後確認這兩個位置都使用新的 URL。

由索引模型根據 Issue 內容生成。