Update build status pointer in README.md

Author: gsmet

README.md

@@ -88,4 +88,4 @@ We provide a `.travis.yml` file so that you can enable CI for your GitHub fork b
 * [Downloads](http://hibernate.org/validator/downloads/)
 * [Mailing Lists](http://hibernate.org/community/)
 * [Issue Tracking](https://hibernate.atlassian.net/browse/HV)
-* [Continuous Integration](http://ci.hibernate.org/view/Validator/) | [![Build Status](http://ci.hibernate.org/view/Validator/job/hibernate-validator-main/badge/icon)](http://ci.hibernate.org/view/Validator/job/hibernate-validator-main/)
+* [Continuous Integration](http://ci.hibernate.org/view/Validator/) | [![Build Status](https://ci.hibernate.org/view/Validator/job/hibernate-validator/job/main/badge/icon)](https://ci.hibernate.org/view/Validator/job/hibernate-validator/job/main/)