The default value for performanceprofile.spec.workloadHints.realTime is true, whereas it is false for highPowerConsumption and perPodPowerManagement

Make it clear to customers that realTime's default is true in the following 2 pages:

https://docs.openshift.com/container-platform/4.12/scalability_and_performance/cnf-low-latency-tuning.html#cnf-understanding-workload-hints_cnf-master
https://docs.openshift.com/container-platform/4.12/rest_api/node_apis/performanceprofile-performance-openshift-io-v2.html#spec-workloadhints