Update the author's URL. Now with more HTTPS!

README.md

@@ -125,4 +125,4 @@ MIT / BSD
 
 ## Author Information
 
-This role was created in 2014 by [Jeff Geerling](http://www.jeffgeerling.com/), author of [Ansible for DevOps](https://www.ansiblefordevops.com/).
+This role was created in 2014 by [Jeff Geerling](https://www.jeffgeerling.com/), author of [Ansible for DevOps](https://www.ansiblefordevops.com/).