Update instrument mapping MXP => 6M

Author: yk2k

sysbrokers/IB/config/ib_config_futures.csv

@@ -349,7 +349,7 @@ MSCIWORLDNET-EUR,MBWO,EUREX,EUR,100,1,FALSE
 MSCIWORLDNET-ICE,NDDUWI,ICEEU,USD,10,1,FALSE
 MSCIWORLDNET-USD,M1WO,EUREX,USD,10,1,FALSE
 MUMMY,TSEMOTHR,OSE.JPN,JPY,1000,1,FALSE
-MXP,MXP,CME,NA,500000,1,FALSE
+MXP,6M,CME,NA,500000,1,FALSE
 NASBIO-mini,BQX,CME,USD,50,1,FALSE
 NASDAQ,NQ,CME,NA,20,1,FALSE
 NASDAQ_micro,MNQ,CME,USD,2,1,FALSE