chore: build-status tag url (derailed#2933)

updates the. build-status tag url

README.md

@@ -23,7 +23,7 @@ Your donations will go a long way in keeping our servers lights on and beers in
 [![Go Report Card](https://goreportcard.com/badge/github.com/derailed/k9s?)](https://goreportcard.com/report/github.com/derailed/k9s)
 [![golangci badge](https://github.com/golangci/golangci-web/blob/master/src/assets/images/badge_a_plus_flat.svg)](https://golangci.com/r/github.com/derailed/k9s)
 [![codebeat badge](https://codebeat.co/badges/89e5a80e-dfe8-4426-acf6-6be781e0a12e)](https://codebeat.co/projects/jackfan.us.kg-derailed-k9s-master)
-[![Build Status](https://travis-ci.com/derailed/k9s.svg?branch=master)](https://travis-ci.com/derailed/k9s)
+[![Build Status](https://api.travis-ci.com/derailed/k9s.svg?branch=master)](https://travis-ci.com/derailed/k9s)
 [![Docker Repository on Quay](https://quay.io/repository/derailed/k9s/status "Docker Repository on Quay")](https://quay.io/repository/derailed/k9s)
 [![release](https://img.shields.io/github/release-pre/derailed/k9s.svg)](https://github.com/derailed/k9s/releases)
 [![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://github.com/mum4k/termdash/blob/master/LICENSE)