Blimp: update logging bitmask metadata to new style and correct errors

Blimp/Parameters.cpp

@@ -196,8 +196,8 @@ const AP_Param::Info Blimp::var_info[] = {
 
     // @Param: LOG_BITMASK
     // @DisplayName: Log bitmask
-    // @Description: 4 byte bitmap of log types to enable
-    // @Bitmask: 0:ATTITUDE_FAST,1:ATTITUDE_MED,2:GPS,3:PM,4:CTUN,5:NTUN,6:RCIN,7:IMU,8:CMD,9:CURRENT,10:RCOUT,11:OPTFLOW,12:PID,13:COMPASS,14:INAV,15:CAMERA,17:MOTBATT,18:IMU_FAST,19:IMU_RAW
+    // @Description: Bitmap of what log types to enable in on-board logger. This value is made up of the sum of each of the log types you want to be saved. On boards supporting microSD cards or other large block-storage devices it is usually best just to enable all basic log types by setting this to 65535.
+    // @Bitmask: 0:Fast Attitude,1:Medium Attitude,2:GPS,3:System Performance,4:Control Tuning,6:RC Input,7:IMU,9:Battery Monitor,10:RC Output,11:Optical Flow,12:PID,13:Compass
     // @User: Standard
     GSCALAR(log_bitmask,    "LOG_BITMASK",          DEFAULT_LOG_BITMASK),