Update README.md

Author: QianMo

README.md

@@ -63,7 +63,7 @@ This repository is about cool design patterns written in Unity3D C#.
 [Command Pattern 命令模式]: https://github.com/QianMo/Unity-Design-Pattern/tree/master/Assets/Behavioral%20Patterns/Command%20Pattern
 [Observer Pattern 观察者模式]:https://github.com/QianMo/Unity-Design-Pattern/tree/master/Assets/Behavioral%20Patterns/Observer%20Pattern
 [Chain of Responsibility Pattern 责任链模式]:https://github.com/QianMo/Unity-Design-Pattern/tree/master/Assets/Behavioral%20Patterns/Chain%20of%20Responsibility%20Pattern
-[Mediator Pattern 中介者模式]:https://github.com/QianMo/Unity-Design-Pattern/tree/master/Assets/Mediator%20Pattern
+[Mediator Pattern 中介者模式]:https://github.com/QianMo/Unity-Design-Pattern/tree/master/Assets/Behavioral%20Patterns/Mediator%20Pattern
 [Interpreter Pattern 解释器模式]:https://github.com/QianMo/Unity-Design-Pattern/tree/master/Assets/Behavioral%20Patterns/Interpreter%20Pattern
 [Iterator Pattern 迭代器模式]:https://github.com/QianMo/Unity-Design-Pattern/tree/master/Assets/Behavioral%20Patterns/Iterator%20Pattern
 [Memento Pattern 备忘录模式]:https://github.com/QianMo/Unity-Design-Pattern/tree/master/Assets/Behavioral%20Patterns/Memento%20Pattern