Fix syntax error in production caching config
Fix syntax error in production caching config

ggoral/whitehall,YOTOV-LIMITED/whitehall,hotvulcan/whitehall,alphagov/whitehall,robinwhittleton/whitehall,YOTOV-LIMITED/whitehall,askl56/whitehall,askl56/whitehall,robinwhittleton/whitehall,robinwhittleton/whitehall,hotvulcan/whitehall,robinwhittleton/whitehall,alphagov/whitehall,askl56/whitehall,ggoral/whitehall,alphagov/whitehall,ggoral/whitehall,alphagov/whitehall,ggoral/whitehall,hotvulcan/whitehall,askl56/whitehall,hotvulcan/whitehall,YOTOV-LIMITED/whitehall,YOTOV-LIMITED/whitehall