Fix more syntax issues in changelog file.
Fix more syntax issues in changelog file.

Plexxi/st2,StackStorm/st2,Plexxi/st2,StackStorm/st2,StackStorm/st2,nzlosh/st2,nzlosh/st2,nzlosh/st2,StackStorm/st2,Plexxi/st2,Plexxi/st2,nzlosh/st2