Fix travis CI link in README

Author: hsanjuan

README.md

@@ -5,7 +5,7 @@ go-blockservice
 [![](https://img.shields.io/badge/project-IPFS-blue.svg?style=flat-square)](http://ipfs.io/)
 [![](https://img.shields.io/badge/freenode-%23ipfs-blue.svg?style=flat-square)](http://webchat.freenode.net/?channels=%23ipfs)
 [![Coverage Status](https://codecov.io/gh/ipfs/go-block-format/branch/master/graph/badge.svg)](https://codecov.io/gh/ipfs/go-block-format/branch/master)
-[![Travis CI](https://travis-ci.org/ipfs/go-block-format.svg?branch=master)](https://travis-ci.org/ipfs/go-block-format)
+[![Travis CI](https://travis-ci.com/ipfs/go-blockservice.svg?branch=master)](https://travis-ci.com/ipfs/go-blockservice)
 
 > go-blockservice provides a seamless interface to both local and remote storage backends.