Update README.md

Geekhyt · web-flow · commit 4fe2e4a2fd86 · 2021-02-26T15:50:38.000+08:00
diff --git a/README.md b/README.md
@@ -64,6 +64,7 @@
 - [选择排序](https://github.com/Geekhyt/javascript-leetcode/issues/41)
 - [归并排序](https://github.com/Geekhyt/javascript-leetcode/issues/42)
 - [快速排序](https://github.com/Geekhyt/javascript-leetcode/issues/43)
+- [堆排序](https://github.com/Geekhyt/javascript-leetcode/issues/44)
 
 ## 动态规划
 - [70. 爬楼梯](https://github.com/Geekhyt/javascript-leetcode/issues/38)
