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-lsun2005

先檢查 repository 描述和 README 中顯示的 URL。將這兩個參照都更新為 repository 的 GitHub Pages 遊戲 URL，然後確認 README 連結和 repository 描述是否指向預期的副本。

由索引模型根據 Issue 內容生成。