Tools: update AHRS AutoTrim build option description

Author: rmackay9

Tools/scripts/build_options.py

@@ -158,7 +158,7 @@ def config_option(self):
     Feature('Copter', 'MODE_FLIP', 'MODE_FLIP_ENABLED', 'Enable Mode Flip', 0, None),
     Feature('Copter', 'MODE_BRAKE', 'MODE_BRAKE_ENABLED', 'Enable Mode Brake', 0, None),
     Feature('Copter', 'COPTER_ADVANCED_FAILSAFE', 'AP_COPTER_ADVANCED_FAILSAFE_ENABLED', 'Enable Advanced Failsafe', 0, "ADVANCED_FAILSAFE"),  # NOQA: 501
-    Feature('Copter', 'COPTER_AHRS_AUTO_TRIM', 'AP_COPTER_AHRS_AUTO_TRIM_ENABLED', 'Enable Copter in-flight AHRS Trim calibration', 0, None),  # noqa
+    Feature('Copter', 'COPTER_AHRS_AUTO_TRIM', 'AP_COPTER_AHRS_AUTO_TRIM_ENABLED', 'Enable Copter AHRS AutoTrim', 0, None),  # noqa
 
     Feature('Rover', 'ROVER_ADVANCED_FAILSAFE', 'AP_ROVER_ADVANCED_FAILSAFE_ENABLED', 'Enable Advanced Failsafe', 0, "ADVANCED_FAILSAFE"),  # NOQA: 501