updates book

JackChan1999 · JackChan1999 · commit f2fda1d9292f · 2017-04-05T21:35:49.000+08:00
diff --git a/第3章 面向对象/文档注释.md b/第3章 面向对象/文档注释.md
@@ -79,13 +79,9 @@
 ```
 运行结果：
 
-![1491240419406](img/1491240419406.png)
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-
-
-![1491240434244](img/1491240434244.png)
-
+![1491240419406](img/1491240419406.png) 
 
+![1491240434244](img/1491240434244.png) 
 
 ![1491240451956](img/1491240451956.png)
 
