Update README.md

Author: kamyu104

README.md

@@ -3,7 +3,7 @@
 ![Language](https://img.shields.io/badge/language-Python%20%2F%20C++11-orange.svg) 
 [![License](https://img.shields.io/badge/license-MIT-blue.svg)](./LICENSE.md) 
 ![Update](https://img.shields.io/badge/update-weekly-green.svg) 
-![Progress](https://img.shields.io/badge/progress-1521%20%2F%201515-ff69b4.svg) 
+![Progress](https://img.shields.io/badge/progress-1521%20%2F%201521-ff69b4.svg) 
 [![SayThanks](https://img.shields.io/badge/say-thanks-ff69f4.svg)](https://saythanks.io/to/kamyu104) 
 ![Travis](https://travis-ci.org/kamyu104/LeetCode-Solutions.svg?branch=master)<br>
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