小傅哥，doc 内容更新《小试牛刀，实现一个简单的Bean容器》

README.md

@@ -32,7 +32,7 @@
 
 - [x] 第 1 章：[开篇介绍，我要带你撸 Spring 啦！](https://bugstack.cn/spring/2021/05/16/%E7%AC%AC1%E7%AB%A0-%E5%BC%80%E7%AF%87%E4%BB%8B%E7%BB%8D-%E6%89%8B%E5%86%99Spring%E8%83%BD%E7%BB%99%E4%BD%A0%E5%B8%A6%E6%9D%A5%E4%BB%80%E4%B9%88.html)
 - [x] 第 2 章：[小试牛刀，实现一个简单的Bean容器](https://bugstack.cn/spring/2021/05/20/%E7%AC%AC2%E7%AB%A0-%E5%B0%8F%E8%AF%95%E7%89%9B%E5%88%80-%E5%AE%9E%E7%8E%B0%E4%B8%80%E4%B8%AA%E7%AE%80%E5%8D%95%E7%9A%84Bean%E5%AE%B9%E5%99%A8.html)
-- [ ] 第 3 章：Spring Bean 的定义和注册
+- [x] 第 3 章：[初显身手，运用设计模式，实现 Bean 的定义、注册、获取](https://bugstack.cn/spring/2021/05/23/%E7%AC%AC3%E7%AB%A0-%E5%88%9D%E6%98%BE%E8%BA%AB%E6%89%8B-%E8%BF%90%E7%94%A8%E8%AE%BE%E8%AE%A1%E6%A8%A1%E5%BC%8F-%E5%AE%9E%E7%8E%B0-Bean-%E7%9A%84%E5%AE%9A%E4%B9%89-%E6%B3%A8%E5%86%8C-%E8%8E%B7%E5%8F%96.html)
 - [ ] 第 4 章：Spring Bean 构造函数实例化策略以及Cglib动态生成使用
 - [ ] 第 5 章：给 Bean 对象填充属性信息
 - [ ] 第 6 章：待归档...
@@ -41,7 +41,7 @@
 | :--: | --------------------------------------------- | ------------------------------------------------------------ | ------------------------------------------------------------ |
 |  1   | [开篇介绍，我要带你撸 Spring 啦！](https://bugstack.cn/spring/2021/05/16/%E7%AC%AC1%E7%AB%A0-%E5%BC%80%E7%AF%87%E4%BB%8B%E7%BB%8D-%E6%89%8B%E5%86%99Spring%E8%83%BD%E7%BB%99%E4%BD%A0%E5%B8%A6%E6%9D%A5%E4%BB%80%E4%B9%88.html) | [small-spring](https://github.com/fuzhengwei/small-spring) | [small-spring](https://gitee.com/fustack/small-spring) |
 |  2   | [小试牛刀，实现一个简单的Bean容器](https://bugstack.cn/spring/2021/05/20/%E7%AC%AC2%E7%AB%A0-%E5%B0%8F%E8%AF%95%E7%89%9B%E5%88%80-%E5%AE%9E%E7%8E%B0%E4%B8%80%E4%B8%AA%E7%AE%80%E5%8D%95%E7%9A%84Bean%E5%AE%B9%E5%99%A8.html)    | [small-spring-step-01](https://github.com/small-spring/small-spring-step-01) | [small-spring-step-01](https://gitee.com/small-spring/small-spring-step-01) |
-|  3   | Spring Bean 的定义和注册 | [small-spring-step-02](https://github.com/small-spring/small-spring-step-02) | [small-spring-step-02](https://gitee.com/small-spring/small-spring-step-02) |
+|  3   | [初显身手，运用设计模式，实现 Bean 的定义、注册、获取](https://bugstack.cn/spring/2021/05/23/%E7%AC%AC3%E7%AB%A0-%E5%88%9D%E6%98%BE%E8%BA%AB%E6%89%8B-%E8%BF%90%E7%94%A8%E8%AE%BE%E8%AE%A1%E6%A8%A1%E5%BC%8F-%E5%AE%9E%E7%8E%B0-Bean-%E7%9A%84%E5%AE%9A%E4%B9%89-%E6%B3%A8%E5%86%8C-%E8%8E%B7%E5%8F%96.html) | [small-spring-step-02](https://github.com/small-spring/small-spring-step-02) | [small-spring-step-02](https://gitee.com/small-spring/small-spring-step-02) |
 |  4   | Spring Bean 构造函数实例化策略以及Cglib动态生成使用 | [small-spring-step-03](https://github.com/small-spring/small-spring-step-03) | [small-spring-step-03](https://gitee.com/small-spring/small-spring-step-03) |
 |  5   | 给 Bean 对象填充属性信息          | [small-spring-step-04](https://github.com/small-spring/small-spring-step-04) | [small-spring-step-04](https://gitee.com/small-spring/small-spring-step-04) |
 |  6   | 待归档...                     | - | - |