docs: update content

docs/src/demos/Examples/Book/index.vue

@@ -71,7 +71,7 @@
 
 <script>
 import { Editor, EditorContent } from '@tiptap/vue-2'
-import { defaultExtensions } from '@tiptap/starter-kit'
+import StarterKit from '@tiptap/starter-kit'
 import { content } from './content.js'
 
 export default {
@@ -87,7 +87,9 @@ export default {
 
   mounted() {
     this.editor = new Editor({
-      extensions: defaultExtensions(),
+      extensions: [
+        StarterKit,
+      ],
       content,
       editorProps: {
         attributes: {