https link and prettify CSS

css/business-casual.css

@@ -1,5 +1,5 @@
 /*!
- * Start Bootstrap - Business Casual (http://startbootstrap.com/template-overviews/business-casual)
+ * Start Bootstrap - Business Casual (https://startbootstrap.com/template-overviews/business-casual)
  * Copyright 2013-2017 Start Bootstrap
  * Licensed under MIT (https://github.com/BlackrockDigital/startbootstrap-business-casual/blob/master/LICENSE)
  */