Fixed missing import from react-modals documentation

Author: sunesimonsen

packages/modals/README.md

@@ -21,7 +21,7 @@ npm install react react-dom prop-types styled-components @zendeskgarden/react-th
 import '@zendeskgarden/react-modals/dist/styles.css';
 
 import { ThemeProvider } from '@zendeskgarden/react-theming';
-import { Modal, Header, Body, Footer, Close } from '@zendeskgarden/react-modals';
+import { Modal, Header, Body, Footer, FooterItem, Close } from '@zendeskgarden/react-modals';
 import { Button } from '@zendeskgarden/react-buttons';
 
 /**