Copter: update ARMING_CHECK parm description

ArduCopter/Parameters.pde

@@ -397,7 +397,7 @@ const AP_Param::Info var_info[] PROGMEM = {
     // @Param: ARMING_CHECK
     // @DisplayName: Arming check
     // @Description: Allows enabling or disabling of pre-arming checks of receiver, accelerometer, barometer, compass and GPS
-    // @Values: 0:Disabled, 1:Enabled, -3:Skip Baro, -5:Skip Compass, -9:Skip GPS, -17:Skip INS, -33:Skip Parameters, -65:Skip RC, 127:Skip Voltage
+    // @Values: 0:Disabled, 1:Enabled, -3:Skip Baro, -5:Skip Compass, -9:Skip GPS, -17:Skip INS, -33:Skip Params/Sonar, -65:Skip RC, 127:Skip Voltage
     // @User: Standard
     GSCALAR(arming_check, "ARMING_CHECK",           ARMING_CHECK_ALL),