opener plugin docs missing mention of requireLiteralLeadingDot

For context, I open a PDF file by the path returned from the backend. The backend uses [`platform_dirs::AppDirs`](https://docs.rs/platform-dirs/latest/platform_dirs/struct.AppDirs.html#impl-AppDirs) with `use_xdg_on_macos` being `true`. The frontend receives a path that looks like `/Users/user/.local/share/app/file.pdf`. It starts to work only if to move the file outside the `.local` folder.

### Code

```ts
openPath("/Users/user/.local/share/app/file.pdf"); // Error
openPath("/Users/user/.local/share/file.pdf"); // Error
openPath("/Users/user/.local/file.pdf"); // Error
openPath("/Users/user/file.pdf"); // No error
```

### Error

`Not allowed to open path /Users/user/.local/share/app/file.pdf`

### Permission

```json
{
"identifier": "opener:allow-open-path",
"allow": [{ "path": "**/*.pdf" }]
}
```