Fix computeroutput usage
Fix computeroutput usage

Fix two wrong markup usages.

Change-Id: Ifda2b68f26c54f16ae5aff4d23bb2d46bcf0e990

Nabs007/training-guides,Nabs007/training-guides,harrisonfeng/training-guides,openstack/training-guides,Nabs007/training-guides,harrisonfeng/training-guides,harrisonfeng/training-guides,openstack/training-guides