更新README.md

Author: aQua

README.md

@@ -1,6 +1,6 @@
 # [LeetCode](https://leetcode.com)习题的Golang解答
 [![LeetCode](https://img.shields.io/badge/LeetCode-aQuaYi-blue.svg)](https://leetcode.com/aQuaYi/)
-[![LeetCode Ranking](https://img.shields.io/badge/Ranking-47308-blue.svg)](https://leetcode.com/aQuaYi/)
+[![LeetCode Ranking](https://img.shields.io/badge/Ranking-45051-blue.svg)](https://leetcode.com/aQuaYi/)
 [![Build Status](https://www.travis-ci.org/aQuaYi/LeetCode-in-Golang.svg?branch=master)](https://www.travis-ci.org/aQuaYi/LeetCode-in-Golang)
 [![codecov](https://codecov.io/gh/aQuaYi/LeetCode-in-Golang/branch/master/graph/badge.svg)](https://codecov.io/gh/aQuaYi/LeetCode-in-Golang)