Fix typo in redis parameter.
Fix typo in redis parameter.

@ttomsu please review.
tgracchus/spinnaker,duftler/spinnaker,duftler/spinnaker,stitchfix/spinnaker,jtk54/spinnaker,skim1420/spinnaker,ewiseblatt/spinnaker,spinnaker/spinnaker,stitchfix/spinnaker,skim1420/spinnaker,ewiseblatt/spinnaker,jtk54/spinnaker,skim1420/spinnaker,skim1420/spinnaker,spinnaker/spinnaker,imosquera/spinnaker,duftler/spinnaker,spinnaker/spinnaker,spinnaker/spinnaker,Roshan2017/spinnaker,imosquera/spinnaker,tgracchus/spinnaker,Roshan2017/spinnaker,ewiseblatt/spinnaker,stitchfix/spinnaker,ewiseblatt/spinnaker,duftler/spinnaker,jtk54/spinnaker,imosquera/spinnaker,Roshan2017/spinnaker,tgracchus/spinnaker