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-dumpsterfire/

更新儲存庫描述和 README 中的 URL。將兩個連結與 issue 中的目標 URL 進行比較，然後確認每個連結都指向此儲存庫的遊戲副本。

由索引模型根據 Issue 內容生成。