EKF: Change a typo

src/modules/ekf2/EKF/gps_control.cpp

@@ -246,7 +246,7 @@ bool Ekf::tryYawEmergencyReset()
 	bool success = false;
 
 	/* A rapid reset to the yaw emergency estimate is performed if horizontal velocity innovation checks continuously
-	 * fails while the difference between the yaw emergency estimator and the yas estimate is large.
+	 * fails while the difference between the yaw emergency estimator and the yaw estimate is large.
 	 * This enables recovery from a bad yaw estimate. A reset is not performed if the fault condition was
 	 * present before flight to prevent triggering due to GPS glitches or other sensor errors.
 	 */