Minor doc fix
Minor doc fix

Changed json to JSON for correct capitalization

Change-Id: I72ae9f205a2089e2d6f72c5f5c0fd55d61ee7532

intel-onp/kolla,coolsvap/kolla,mrangana/kolla,stackforge/kolla,dardelean/kolla-ansible,dardelean/kolla-ansible,rahulunair/kolla,mandre/kolla,stackforge/kolla,nihilifer/kolla,coolsvap/kolla,mandre/kolla,openstack/kolla,GalenMa/kolla,intel-onp/kolla,mandre/kolla,mrangana/kolla,coolsvap/kolla,stackforge/kolla,nihilifer/kolla,dardelean/kolla-ansible,GalenMa/kolla,openstack/kolla,rahulunair/kolla