FD added dxvx and dzvz receivers

fdelmodc/fdelmodc.c

@@ -230,7 +230,7 @@ char *sdoc[] = {
 "   rec_type_txx=0 .... Txx registration _rtxx",
 "   rec_type_tzz=0 .... Tzz registration _rtzz",
 "   rec_type_txz=0 .... Txz registration _rtxz",
-"   rec_type_dzvz=1 ... dzVz registration _rdzvz",
+"   rec_type_dzvz=0 ... dzVz registration _rdzvz",
 "   rec_type_dxvx=0 ... dxVx registration _rdxvx",
 "   rec_type_pp=0 ..... P (divergence) registration _rP",
 "   rec_type_ss=0 ..... S (curl) registration _rS",