Update README.md

scarsu · web-flow · commit 9df6d919b906 · 2021-06-26T08:02:01.000+08:00
diff --git a/README.md b/README.md
@@ -30,7 +30,7 @@
 - [144. 二叉树的前序遍历](https://github.com/Geekhyt/javascript-leetcode/issues/14)✅
 - [145. 二叉树的后序遍历](https://github.com/Geekhyt/javascript-leetcode/issues/15)✅
 - [100. 相同的树](https://github.com/Geekhyt/javascript-leetcode/issues/16)✅
-- [101. 对称二叉树](https://github.com/Geekhyt/javascript-leetcode/issues/17)
+- [101. 对称二叉树](https://github.com/Geekhyt/javascript-leetcode/issues/17)✅
 - [102. 二叉树的层序遍历](https://github.com/Geekhyt/javascript-leetcode/issues/18)
 - [104. 二叉树的最大深度](https://github.com/Geekhyt/javascript-leetcode/issues/19)✅
 - [226. 翻转二叉树](https://github.com/Geekhyt/javascript-leetcode/issues/20)✅
