Game broken

When attempting to access this at https://githubschool.github.io/github-games-mit10976/, I am getting a 404. This could be caused by a couple things:

- GitHub pages needs to be enabled on master. You can fix this in the repository settings.
- the index.html file is incorrectly named inde.html. We will fix this together in class.

Can you please fix the first bullet @mit10976?

首先检查仓库的 GitHub Pages 设置，并确认部署源已按要求配置。然后验证 issue 中提到的 index.html 文件名，并重新加载已发布的 URL；当页面不再返回 404 时即表示完成。

由索引模型根据 Issue 内容生成。