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-mn06355

檢查儲存庫描述和 README，也就是 issue 中提到的兩個位置。將兩個 URL 更新為 https://githubschool.github.io/github-games-mn06355，然後確認描述和 README 都分別連結到此儲存庫的遊戲副本。

由索引模型根據 Issue 內容生成。