DataFlash: fix error in NKF descriptor

libraries/DataFlash/DataFlash.h

@@ -811,7 +811,7 @@ Format characters in the format string for binary log messages
     { LOG_NKF1_MSG, sizeof(log_EKF1), \
       "NKF1","QccCffffffccc","TimeUS,Roll,Pitch,Yaw,VN,VE,VD,PN,PE,PD,GX,GY,GZ" }, \
     { LOG_NKF2_MSG, sizeof(log_NKF2), \
-      "NKF2","Qcccbcchhhhhh","TimeUS,AZbias,GSX,GSY,GSZ,VWN,VWE,MN,ME,MD,MX,MY,MZ" }, \
+      "NKF2","Qbccccchhhhhh","TimeUS,AZbias,GSX,GSY,GSZ,VWN,VWE,MN,ME,MD,MX,MY,MZ" }, \
     { LOG_NKF3_MSG, sizeof(log_NKF3), \
       "NKF3","Qcccccchhhcc","TimeUS,IVN,IVE,IVD,IPN,IPE,IPD,IMX,IMY,IMZ,IYAW,IVT" }, \
     { LOG_NKF4_MSG, sizeof(log_EKF4), \