fixing example stack.xml
fixing example stack.xml

scpeters/catkin,thaddeustaylor/catkin,shyamalschandra/catkin,beni55/catkin,wkentaro/catkin,harmishhk/catkin,harmishhk/catkin,asmodehn/catkin,meyerj/catkin,jack-oquin/catkin,scpeters/catkin,meyerj/catkin,shyamalschandra/catkin,wkentaro/catkin,meyerj/catkin,ros/catkin,asmodehn/catkin,jack-oquin/catkin,beni55/catkin,ros/catkin,thaddeustaylor/catkin,asmodehn/catkin,thaddeustaylor/catkin,beni55/catkin,jack-oquin/catkin,harmishhk/catkin,wkentaro/catkin,scpeters/catkin,ros/catkin,shyamalschandra/catkin