[Haml] Fix the 2.2.15 header in the changelog.
[Haml] Fix the 2.2.15 header in the changelog.

jaroot32/sass,MetaAshley/sass,antonifs/sass,Galactix/sass,ridixcr/sass,baiyanghese/sass,keithpitty/haml,Iamronan/sass,cmpereirasi/sass,chriseppstein/sass,dylannnn/sass,dg1dd1ngs/haml,stewx/sass,dg1dd1ngs/haml,tangposmarvin/haml,Nzaga/sass,JuanitoFatas/sass,StephanieMak/sass,MetaAshley/sass,concord-consortium/haml,Anshdesire/sass,amitsuroliya/sass,Andrey-Pavlov/sass,zaru/sass,macressler/haml,purcell/haml,stanhu/haml,srawlins/sass,oss-practice/sass,nazar-pc/haml,DanteKaris/sass,nickg33/sass,sideci-sample/sideci-sample-haml,Industrys/sass,srinivashappy/sass,srawlins/sass,chriseppstein/haml,OrenBochman/sass,nicklima/sass,HugoRLopes/sass,macressler/haml,saper/sass,jaroot32/sass,Anshdesire/sass,StephanieMak/sass,zaru/sass,Industrys/sass,chriseppstein/haml,haml/haml,srinivashappy/sass,antonifs/sass,tenderlove/sass,OrenBochman/sass,Ahnita/sass,haml/haml,DanteKaris/sass,modulexcite/sass,tangposmarvin/sass,Galactix/sass,Iamronan/sass,hcatlin/sass,askl56/sass,Andrey-Pavlov/sass,danielfein/sass,liquidmetal/sass,amatsuda/haml,lmetla/sass,HugoRLopes/sass,rammy7219/sass,PMArtz92/sass,xzyfer/sass,hcatlin/sass,uniba/hamldoc_ja,modulexcite/sass,keithpitty/haml,liquidmetal/sass,ridixcr/sass,schneems/sass,stanhu/haml,nazar-pc/haml,saper/sass,cmpereirasi/sass,tangposmarvin/haml,lmetla/sass,askl56/sass,Nzaga/sass,amitsuroliya/sass,haml/haml,tangposmarvin/sass,JuanitoFatas/sass,nicklima/sass,Ahnita/sass,nickg33/sass,schneems/sass,danielfein/sass,rammy7219/sass,PMArtz92/sass,xzyfer/sass,14113/sass,briangonzalez/sass,stewx/sass,dylannnn/sass,haml/haml