README fix.

Author: Anton Kucherov

README.md

@@ -1,7 +1,7 @@
 # Percona MongoDB Exporter
 
 [![Release](https://img.shields.io/github/release/percona/mongodb_exporter.svg?style=flat)](https://github.com/percona/mongodb_exporter/releases/latest)
-[![Build Status](https://travis-ci.org/percona/mongodb_exporter.svg?branch=master)](https://travis-ci.org/percona/mongodb_exporter)
+[![Build Status](https://travis-ci.com/percona/mongodb_exporter.svg?branch=master)](https://travis-ci.com/percona/mongodb_exporter)
 [![codecov.io Code Coverage](https://img.shields.io/codecov/c/github/percona/mongodb_exporter.svg?maxAge=2592000)](https://codecov.io/github/percona/mongodb_exporter?branch=master)
 [![Go Report Card](https://goreportcard.com/badge/github.com/percona/mongodb_exporter)](https://goreportcard.com/report/github.com/percona/mongodb_exporter)
 [![CLA assistant](https://cla-assistant.percona.com/readme/badge/percona/mongodb_exporter)](https://cla-assistant.percona.com/percona/mongodb_exporter)