Update README.md

Author: francistao

README.md

@@ -54,7 +54,7 @@
 * [DesignPattern(设计模式)](https://github.com/GeniusVJR/LearningNotes/tree/master/Part1/DesignPattern)
 
 
-* [面向对象六大原则](https://github.com/GeniusVJR/LearningNotes/blob/master/Part1/DesignPattern/常见的面向对象设计原则.md)
+     * [面向对象六大原则](https://github.com/GeniusVJR/LearningNotes/blob/master/Part1/DesignPattern/常见的面向对象设计原则.md)
      * [单例模式](https://github.com/GeniusVJR/LearningNotes/blob/master/Part1/DesignPattern/单例模式.md)
      * [Builder模式](https://github.com/GeniusVJR/LearningNotes/blob/master/Part1/DesignPattern/Builder模式.md)
      * [原型模式](https://github.com/GeniusVJR/LearningNotes/blob/master/Part1/DesignPattern/原型模式.md)