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-linchanSF

更新 repository 描述和 README，目前它們指向 githubschool 的遊戲副本。將兩個 URL 都變更為 https://githubschool.github.io/github-games-linchanSF，然後確認描述和 README 顯示的是相同的目的地。

由索引模型根據 Issue 內容生成。