doc: 修改错误目录

Xing-He · Xing-He · commit 6cc12502afa5 · 2018-08-16T23:11:35.000+08:00
diff --git a/README.md b/README.md
@@ -32,7 +32,7 @@
 - [运算符](./operators.md)
 - [if判断](./if-statement.md)
 - [循环](./loops.md)
-- [迭代器与生成器](./iterator-generator.md.md)
+- [迭代器与生成器](./iterator-generator.md)
 - [数值](./numbers.md)
 - [字符串](./strings.md)
 - [列表](./lists.md)
diff --git a/iterator-generator.md b/iterator-generator.md
@@ -40,7 +40,7 @@ f = fibonacci(10)  # f 是一个迭代器，由生成器返回生成，只有在
 
 while True:
     try:
-        print (next(f), end=" ")
+        print (next(f), end=" ")
     except StopIteration:
         sys.exit()
 ```
