docs(storybook): document the default slot

Author: iOvergaard

packages/uui-ref-node/lib/uui-ref-node.element.ts

@@ -1,5 +1,5 @@
-import { UUIRefElement } from '@umbraco-ui/uui-ref/lib';
 import { defineElement } from '@umbraco-ui/uui-base/lib/registration';
+import { UUIRefElement } from '@umbraco-ui/uui-ref/lib';
 import { css, html } from 'lit';
 import { property, state } from 'lit/decorators.js';
 
@@ -9,7 +9,7 @@ import { property, state } from 'lit/decorators.js';
  *  @fires {UUIRefEvent} selected - fires when the ref is selected
  *  @fires {UUIRefEvent} unselected - fires when the ref is unselected
  *  @description - Component for displaying a reference to a generic node.
- *  @slot - for content
+ *  @slot default - for content
  *  @slot icon - for an icon
  *  @slot tag - for a tag
  *  @slot actions - for actions

packages/uui-ref-node/lib/uui-ref-node.story.ts

@@ -1,7 +1,9 @@
+import '.';
+
 import { Story } from '@storybook/web-components';
 import { html } from 'lit-html';
+
 import { ArrayOfUmbracoWords } from '../../../storyhelpers/UmbracoWordGenerator';
-import './index';
 
 export default {
   id: 'uui-ref-node',