Update index.md
Update index.md

fix wrong variable 

fixes GH-52
broncha/RollerworksMultiUserBundle,broncha/RollerworksMultiUserBundle,rollerworks/RollerworksMultiUserBundle,buddhika-jay/RollerworksMultiUserBundle,buddhikajay/RollerworksMultiUserBundle,buddhika-jay/RollerworksMultiUserBundle,rollerworks/RollerworksMultiUserBundle,buddhikajay/RollerworksMultiUserBundle