Update README.md

jaywcjlove · jaywcjlove · commit da1b19beab8e · 2017-10-10T03:07:42.000+08:00
diff --git a/README.md b/README.md
@@ -581,7 +581,7 @@ a+b  #（运算符是不允许的）
 </details>
 
 <details>
-<summary>包导入 import</summary>
+<summary>包引用介绍 import</summary>
 
 ```go
 import "fmt"
