AP_Airspeed: Add missing D in ARSP

Signed-off-by: Ryan Friedman <[email protected]>

libraries/AP_Airspeed/AP_Airspeed.cpp

@@ -144,7 +144,7 @@ const AP_Param::GroupInfo AP_Airspeed::var_info[] = {
 
     // @Param: _WIND_GATE
     // @DisplayName: Re-enable Consistency Check Gate Size
-    // @Description: Number of standard deviations applied to the re-enable EKF consistency check that is used when ARSPD_OPTIONS bit position 3 is set. Larger values will make the re-enabling of the airspeed sensor faster, but increase the likelihood of re-enabling a degraded sensor. The value can be tuned by using the ARSP.TR log message by setting ARSP_WIND_GATE to a value that is higher than the value for ARSP.TR observed with a healthy airspeed sensor. Occasional transients in ARSP.TR above the value set by ARSP_WIND_GATE can be tolerated provided they are less than 5 seconds in duration and less than 10% duty cycle.
+    // @Description: Number of standard deviations applied to the re-enable EKF consistency check that is used when ARSPD_OPTIONS bit position 3 is set. Larger values will make the re-enabling of the airspeed sensor faster, but increase the likelihood of re-enabling a degraded sensor. The value can be tuned by using the ARSP.TR log message by setting ARSPD_WIND_GATE to a value that is higher than the value for ARSP.TR observed with a healthy airspeed sensor. Occasional transients in ARSP.TR above the value set by ARSPD_WIND_GATE can be tolerated provided they are less than 5 seconds in duration and less than 10% duty cycle.
     // @Description{Copter, Blimp, Rover, Sub}: This parameter and function is not used by this vehicle.
     // @Range: 0.0 10.0
     // @User: Advanced