Update monthly release doc that we are not using travis anymore.

doc/release/monthly.md

@@ -130,9 +130,9 @@ Check if the `init.d/gitlab` script changed since last release: <https://gitlab.
 
 Make sure the code quality indicators are green / good.
 
-- [![build status](http://ci.gitlab.org/projects/1/status.png?ref=master)](http://ci.gitlab.org/projects/1?ref=master) on ci.gitlab.org (master branch)
+- [![Build status](http://ci.gitlab.org/projects/1/status.png?ref=master)](http://ci.gitlab.org/projects/1?ref=master) on ci.gitlab.org (master branch)
 
-- [![build status](https://secure.travis-ci.org/gitlabhq/gitlabhq.png)](https://travis-ci.org/gitlabhq/gitlabhq) on travis-ci.org (master branch)
+- [![Build Status](https://semaphoreapp.com/api/v1/projects/2f1a5809-418b-4cc2-a1f4-819607579fe7/243338/badge.png)](https://semaphoreapp.com/gitlabhq/gitlabhq) (master branch)
 
 - [![Code Climate](https://codeclimate.com/github/gitlabhq/gitlabhq.png)](https://codeclimate.com/github/gitlabhq/gitlabhq)