Game broken

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

打开仓库设置，检查是否已启用 GitHub Pages，并将 master branch 设为其源，如第一条要求所述。然后重新访问 https://githubschool.github.io/github-games-SmartBattery/，确认它不再返回 404；issue 还提到了 index.html 和 inde.html，但明确要求检查的是 Pages 设置。

由索引模型根据 Issue 内容生成。