docs: update content

docs/src/demos/Guide/NodeViews/ReactComponentContent/index.jsx

@@ -1,13 +1,13 @@
 import React from 'react'
 import { useEditor, EditorContent } from '@tiptap/react'
-import { defaultExtensions } from '@tiptap/starter-kit'
+import StarterKit from '@tiptap/starter-kit'
 import ReactComponent from './Extension.js'
 import './styles.scss'
 
 export default () => {
   const editor = useEditor({
     extensions: [
-      ...defaultExtensions(),
+      StarterKit,
       ReactComponent,
     ],
     content: `