Correct for what? Apple batteries despite them saying it isn't required? Please call them and be sure to let them know....
My battery health reading fluctuates by approx 2% in normal usage, this indicates to me the 100%-point IS being continuously re-calibrated against the battery performance without doing any particular deliberate drain/charge process.
That is different to saying Li batteries need using to maintain their capacity, fully agree with that but that isn't "calibration".