doc: Update README.md

Author: jaywcjlove

README-zh.md

@@ -203,7 +203,7 @@ module.exports = proxy;
 您可以使用功能性工具来增强模拟效果。[#17](https://github.com/jaywcjlove/webpack-api-mocker/issues/17)
 
 ```js
-const delay = require('mocker-api/lib/delay');
+const delay = require('mocker-api/delay');
 const noProxy = process.env.NO_PROXY === 'true';
 
 const proxy = {

packages/core/README.md

@@ -206,7 +206,7 @@ module.exports = proxy;
 You can use functional tool to enhance mock. [#17](https://github.com/jaywcjlove/webpack-api-mocker/issues/17)
 
 ```js
-const delay = require('mocker-api/lib/delay');
+const delay = require('mocker-api/delay');
 const noProxy = process.env.NO_PROXY === 'true';
 
 const proxy = {

packages/core/src/delay.ts

@@ -5,7 +5,7 @@ import { MockerProxyRoute, MockerResult, MockerResultFunction } from './';
  * You can use functional tool to enhance mock. [#17](https://github.com/jaywcjlove/webpack-api-mocker/issues/17)
  * 
  * ```js
- * const delay = require('mocker-api/lib/delay');
+ * const delay = require('mocker-api/delay');
  * const noProxy = process.env.NO_PROXY === 'true';
  * 
  * const proxy = {