docs: add import when using Toast or Notify

src/dialog/README.md

@@ -15,7 +15,7 @@ Vue.use(Dialog);
 
 Used to prompt for some messages, only including one confirm button
 
-```javascript
+```js
 Dialog.alert({
   title: 'Title',
   message: 'Content'
@@ -34,7 +34,7 @@ Dialog.alert({
 
 Used to confirm some messages, including a confirm button and a cancel button
 
-```javascript
+```js
  Dialog.confirm({
   title: 'Title',
   message: 'Content'

src/dialog/README.zh-CN.md

@@ -41,7 +41,7 @@ export default {
 
 用于提示一些消息，只包含一个确认按钮
 
-```javascript
+```js
 Dialog.alert({
   title: '标题',
   message: '弹窗内容'
@@ -60,7 +60,7 @@ Dialog.alert({
 
 用于确认消息，包含取消和确认按钮
 
-```javascript
+```js
 Dialog.confirm({
   title: '标题',
   message: '弹窗内容'