Game broken

When attempting to access this at https://githubschool.github.io/github-games-lettung/, 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 @lettung?

打开仓库的Settings并检查GitHub Pages配置，具体确认是否已按请求从master启用Pages。验证 https://githubschool.github.io/github-games-lettung/ 上的网站不再返回404；issue还提到了index.html与inde.html的区别，但要求先检查Pages设置。

由索引模型根据 Issue 内容生成。