Update perf command with new information

[Valastiri]

Bug type

Wrong data or information

Describe the bug

Outdated info according to Donbikes. Requests we update the command in the last line to say that we are working on our own takeoff performance calculator.

Expected behavior

New updated command

Steps to reproduce

n/a

References (optional)

Support ops mention - here

Additional info (optional)

No response

Discord Username (optional)

valastiri