feat: update toc

Author: wx-chevalier

README.md

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 In software engineering, a design pattern is a reusable solution for commonly occurring problems in software design. Design patterns represent the best practices used by the experienced software developers. A design pattern can be thought of as a programming template.
 
-design-pattern-snippets 是 [coding-snippets](https://github.com/wxyyxc1992/coding-snippets) 的重要组成部分，
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 All snippets in this repo are classified into different languages and different categories: Object Oriented Programming, Functional Programming, Concurrent Programming, etc.
 
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+design-pattern-snippets 是 [coding-snippets](https://github.com/wxyyxc1992/coding-snippets) 的重要组成部分，
+
 # Nav | 导航
 
 ## Object Oriented Programming Design Pattern | 面向对象的设计模式