```js
// .storybook/main.js

module.exports={
  // your Storybook configuration
  refs: {
   'design-system': {
     title: "Storybook Design System",
     url: "https://5ccbc373887ca40020446347-yldsqjoxzb.chromatic.com",
     expanded: false // optional, true by default
   }
  }
}
```