Make test less fragile be removing spaces in heredocs
Make test less fragile be removing spaces in heredocs

Otherwise people who use editors which automatically strip trailing
spaces will break this test accidentaly.

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