AP_NavEKF3: minor comment fix re RNG_USE_HGT

libraries/AP_NavEKF3/AP_NavEKF3.cpp

@@ -1464,7 +1464,7 @@ void NavEKF3::setTouchdownExpected(bool val)
 // Set to true if the terrain underneath is stable enough to be used as a height reference
 // in combination with a range finder. Set to false if the terrain underneath the vehicle
 // cannot be used as a height reference. Use to prevent range finder operation otherwise
-// enabled by the combination of EK3_RNG_AID_HGT and EK3_RNG_USE_SPD parameters.
+// enabled by the combination of EK3_RNG_USE_HGT and EK3_RNG_USE_SPD parameters.
 void NavEKF3::setTerrainHgtStable(bool val)
 {
     if (core) {

libraries/AP_NavEKF3/AP_NavEKF3.h

@@ -317,7 +317,7 @@ public:
     // Set to true if the terrain underneath is stable enough to be used as a height reference
     // in combination with a range finder. Set to false if the terrain underneath the vehicle
     // cannot be used as a height reference. Use to prevent range finder operation otherwise
-    // enabled by the combination of EK3_RNG_AID_HGT and EK3_RNG_USE_SPD parameters.
+    // enabled by the combination of EK3_RNG_USE_HGT and EK3_RNG_USE_SPD parameters.
     void setTerrainHgtStable(bool val);
 
     /*

libraries/AP_NavEKF3/AP_NavEKF3_VehicleStatus.cpp

@@ -467,7 +467,7 @@ void NavEKF3_core::setTouchdownExpected(bool val)
 // Set to true if the terrain underneath is stable enough to be used as a height reference
 // in combination with a range finder. Set to false if the terrain underneath the vehicle
 // cannot be used as a height reference. Use to prevent range finder operation otherwise
-// enabled by the combination of EK3_RNG_AID_HGT and EK3_RNG_USE_SPD parameters.
+// enabled by the combination of EK3_RNG_USE_HGT and EK3_RNG_USE_SPD parameters.
 void NavEKF3_core::setTerrainHgtStable(bool val)
 {
     terrainHgtStableSet_ms = imuSampleTime_ms;

libraries/AP_NavEKF3/AP_NavEKF3_core.h

@@ -326,7 +326,7 @@ public:
     // Set to true if the terrain underneath is stable enough to be used as a height reference
     // in combination with a range finder. Set to false if the terrain underneath the vehicle
     // cannot be used as a height reference. Use to prevent range finder operation otherwise
-    // enabled by the combination of EK3_RNG_AID_HGT and EK3_RNG_USE_SPD parameters.
+    // enabled by the combination of EK3_RNG_USE_HGT and EK3_RNG_USE_SPD parameters.
     void setTerrainHgtStable(bool val);
 
     /*