message: fix(callout-quote): add ArrowRight icon import to codesandbox example
  ### Related Ticket(s)
  {{Provide url(s) to the related ticket(s) that this pull request addresses}}
  ### Description
  Forgot the `ArrowRight20` import in the `callout-quote` react wrapper codesandbox example.
  ### Changelog
  **New**
  add needed `ArrowRight20` import for codesandbox example
diff: import React from 'react';
  import { render } from 'react-dom';
  +import ArrowRight20 from '@carbon/icons-react/es/arrow--right/20.js';
  import DDSCalloutQuote from '@carbon/ibmdotcom-web-components/es/components-react/callout-quote/callout-quote';
  import DDSCalloutLinkWithIcon from '@carbon/ibmdotcom-web-components/es/components-react/callout-quote/callout-link-with-icon';
  import DDSQuoteSourceHeading from '@carbon/ibmdotcom-web-components/es/components-react/quote/quote-source-heading';
  