storybook/docs/snippets/common/component-story-csf-description.js.mdx

```js
// Button.stories.js

export default {
  title: 'CustomDescription'
  parameters: {
    docs: { 
        description: { 
            component: 'some component _markdown_' 
        } 
    },
  }
};

export const WithStoryDescription = Template.bind({});
WithStoryDescription.parameters = {
  docs: { 
      description: { 
          story: 'some story **markdown**' 
        } 
    },
};
```