FlightTasks: small rebase naming and typo fixes

src/lib/FlightTasks/tasks/FlightTask.cpp

src/lib/FlightTasks/tasks/FlightTask.hpp

src/lib/FlightTasks/tasks/FlightTaskAutoLine.cpp

src/lib/FlightTasks/tasks/FlightTaskManualAltitudeSmooth.hpp

src/lib/FlightTasks/tasks/FlightTaskManualPosition.cpp

src/lib/FlightTasks/tasks/FlightTaskManualPosition.hpp

src/lib/FlightTasks/tasks/FlightTaskManualPositionSmooth.hpp