Update README.md

Author: lewzylu

README.md

@@ -4,7 +4,7 @@
 
 [![Latest Stable Version](https://poser.pugx.org/qcloud/cos-sdk-v5/v/stable)](https://packagist.org/packages/qcloud/cos-sdk-v5)
 [![Total Downloads](https://img.shields.io/packagist/dt/qcloud/cos-sdk-v5.svg?style=flat)](https://packagist.org/packages/qcloud/cos-sdk-v5)
-[![Build Status](https://travis-ci.org/tencentyun/cos-php-sdk-v5.svg?branch=master)](https://travis-ci.org/tencentyun/cos-php-sdk-v5)
+[![Build Status](https://travis-ci.com/tencentyun/cos-php-sdk-v5.svg?branch=master)](https://travis-ci.com/tencentyun/cos-php-sdk-v5)
 [![codecov](https://codecov.io/gh/tencentyun/cos-php-sdk-v5/branch/master/graph/badge.svg)](https://codecov.io/gh/tencentyun/cos-php-sdk-v5)
 
 ## 环境准备