Copter: fix metadata in FS_GCS_ENABLE param

ArduCopter/Parameters.cpp

@@ -172,8 +172,8 @@ const AP_Param::Info Copter::var_info[] = {
 
     // @Param: FS_GCS_ENABLE
     // @DisplayName: Ground Station Failsafe Enable
-    // @Description: Controls whether failsafe will be invoked (and what action to take) when connection with Ground station is lost for at least 5 seconds. NB. The GCS Failsafe is only active when RC_OVERRIDE is being used to control the vehicle.
-    // @Values: 0:Disabled,1:Enabled always RTL,2:Enabled Continue with Mission in Auto Mode (Deprecated in 4.0+),3:Enabled always SmartRTL or RTL,4:Enabled always SmartRTL or Land,5:Enabled always land (4.0+ Only)
+    // @Description: Controls whether failsafe will be invoked (and what action to take) when connection with Ground station is lost for at least 5 seconds. See FS_OPTIONS param for additional actions, or for cases allowing Mission continuation, when GCS failsafe is enabled.
+    // @Values: 0:Disabled/NoAction,1:RTL,2:RTL or Continue with Mission in Auto Mode (Deprecated in 4.0+-see FS_OPTIONS),3:SmartRTL or RTL,4:SmartRTL or Land,5:Land (4.0+ Only)
     // @User: Standard
     GSCALAR(failsafe_gcs, "FS_GCS_ENABLE", FS_GCS_DISABLED),