[Bug]: obd pref should be obd perf

[longdafeng]

Describe the bug

normally perf is the performance abbreviation.

pref means preference.
perf means performance,

Environment

no special

Fast reproduce steps

obd help

Expected behavior

No response

Actual behavior

No response

Additional context

No response

[gys-git]

Thank you for your feedback. We have received this issue and plan to fix it in the upcoming version OBD 4.0.0, scheduled for release in early November.