[Bug] This plugin should not affect docs.github.com

### Version

_No response_

### Current Behavior

Enabling this plugin will cause abnormal display of docs.github.com in dark mode

Refer to https://github.com/orgs/community/discussions/193247

### Expected Behavior

_No response_

### Environment

```markdown
- OS: MacOS 26.3
- Browser: Microsoft Edge Version 147.0.3912.72 (Official build) (arm64)
```

### Any additional comments?

_No response_