Update README.md

Geekhyt · web-flow · commit 8527faf77235 · 2021-02-26T15:45:39.000+08:00
diff --git a/README.md b/README.md
@@ -58,5 +58,8 @@
 - [344. 反转字符串](https://github.com/Geekhyt/javascript-leetcode/issues/36)
 - [415. 字符串相加](https://github.com/Geekhyt/javascript-leetcode/issues/37)
 
+## 排序
+- [冒泡排序](https://github.com/Geekhyt/javascript-leetcode/issues/39)
+
 ## 动态规划
 - [70. 爬楼梯](https://github.com/Geekhyt/javascript-leetcode/issues/38)
