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-gonzalan6/

更新 issue 中标识的 repository 描述和 README 中的 URL。先检查当前链接，将其替换为 https://githubschool.github.io/github-games-gonzalan6/，并验证这两个位置都指向 repository 中的游戏副本。

由索引模型根据 Issue 内容生成。