Update README.md

Author: rebuild-123

README.md

@@ -5,7 +5,8 @@
 [chapter 3](https://github.com/rebuild-123/Python-Head-First-Design-Patterns/tree/main/decorator)-done (Only io has no translation.) 
 [chapter 4](https://github.com/rebuild-123/Python-Head-First-Design-Patterns/tree/main/factory)-done 
 [chapter 5](https://github.com/rebuild-123/Python-Head-First-Design-Patterns/tree/main/singleton)-done 
-[chapter 6](https://github.com/rebuild-123/Python-Head-First-Design-Patterns/tree/main/command)-in translation 
+[chapter 6](https://github.com/rebuild-123/Python-Head-First-Design-Patterns/tree/main/command)-done (Only swing has no translation.) 
+[chapter 7(adapter)](https://github.com/rebuild-123/Python-Head-First-Design-Patterns/tree/main/adapter)-done 
 
 ## Introduction 
 1. Translated from [Head-First-Design-Patterns](https://github.com/bethrobson/Head-First-Design-Patterns) (java)