Add theme mode on your docs website dude?

**Question**
Please explain the problem you are running into.

**Code sample**
```dart
Provide a few simple lines of code to show your problem.
```

**Version**
- Platform: iOS, Android, Mac, Windows, Linux, Web
- Flutter version: [e.g. 1.5.4]
- Hive version: [e.g. 0.5.0]

The issue provides no implementation file, test, or concrete acceptance criteria. Start by inspecting the documentation website configuration and clarify the intended theme modes and supported platforms. Done would require an agreed theme-mode change on the docs website, but the payload does not define the expected behavior.

Written by the indexing model from the issue text.