amend readme

imoyao · imoyao · commit d3773de03dfd · 2019-06-03T16:01:46.000+08:00
diff --git a/sorts/readme.md b/sorts/readme.md
@@ -6,6 +6,7 @@
 - [快速排序](./quick_sort)
 - [冒泡排序](./bubble_sort)
 - [插入排序](./insertion_sort)
+- [希尔排序](./shell_sort)
 
 
 
