fix more commands

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

@@ -1,10 +1,10 @@
 <template>
   <div>
     <div v-if="editor">
-      <button @click="editor.focus().undo()">
+      <button @click="editor.chain().focus().undo().run()">
         undo
       </button>
-      <button @click="editor.focus().redo()">
+      <button @click="editor.chain().focus().redo().run()">
         redo
       </button>
     </div>

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

@@ -1,13 +1,5 @@
 <template>
-  <div>
-    <button @click="() => console.log(editor.focus())">focus</button>
-    <button @click="() => console.log(editor.insertText('hello'))">insert</button>
-    <button @click="editor.chain().focus().insertText('wat').insertHTML('<p>2</p>').run()">chain 1</button>
-    <button @click="editor.chain().insertText('1').focus().run()">chain 2</button>
-    <button @click="editor.chain().setContent('reset').insertText('1').clearContent().run()">setContent</button>
-    <button @click="editor.chain().focus().deleteSelection().run()">deleteSelection</button>
-    <editor-content :editor="editor" />
-  </div>
+  <editor-content :editor="editor" />
 </template>
 
 <script>
@@ -24,7 +16,6 @@ export default {
   data() {
     return {
       editor: null,
-      console: console,
     }
   },