Update links to options in REFERENCE.md
Update links to options in REFERENCE.md

Update links that haven't been updated after change in options handling.

macressler/haml,keithpitty/haml,stanhu/haml,keithpitty/haml,dg1dd1ngs/haml,haml/haml,dg1dd1ngs/haml,nazar-pc/haml,tangposmarvin/haml,stanhu/haml,sideci-sample/sideci-sample-haml,tangposmarvin/haml,haml/haml,macressler/haml,haml/haml,nazar-pc/haml,haml/haml