docs: clarify renderer choices (#22)

Author: RiccardoGrieco

README.md

@@ -243,12 +243,16 @@ are read directly from your VSCode settings.
 The Preview panel renders the current OpenAPI document and lets you interact with it.
 Preview panel can be opened by opening the Command Palette (CTRL+Shift+P) and running the `OpenAPI Toolkit: Show API Document preview` command.
 
-Supported renderers:
+The extension supports multiple OpenAPI preview renderers. You can switch between them by setting `speclynx.openapi.preview.renderer` in your VS Code settings:
 
-- [Scalar API Reference](https://github.com/scalar/scalar/tree/main/packages/api-reference#readme) (default)
-- [SwaggerUI](https://github.com/swagger-api/swagger-ui)
+| Renderer    | Description | Default |
+|-------------|-------------|---------|
+| **scalar**  | [Scalar API Reference](https://github.com/scalar/scalar/tree/main/packages/api-reference#readme) | ✅ |
+| **swagger-ui** | [Swagger UI](https://github.com/swagger-api/swagger-ui) |  |
 
-To switch between renderers, change the `speclynx.openapi.preview.renderer` setting in your VSCode configuration.
+> In VS Code, go to **File → Preferences → Settings**, then search for **@ext:SpecLynx.vscode-openapi-toolkit**.
+>  
+> This will display all settings provided by the extension.
 
 ###### Scalar API Reference
 ![Scalar API Reference Preview](https://github.com/user-attachments/assets/176f07bf-b54a-42d7-91c3-d3d745017e5e)