URL in description and README broken

The URL in the repository description and 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-blear-cadence/

打开仓库描述和 README，然后找到当前指向 githubschool 副本的链接。将两者都更新为 https://githubschool.github.io/github-games-blear-cadence/，并验证每个链接都解析到此游戏的副本。

由索引模型根据 Issue 内容生成。