Removing several warning by makeinfo in ledger-mode.texi
Removing several warning by makeinfo in ledger-mode.texi

ledger/ledger,duncanmortimer/ledger,afh/ledger,paulbdavis/ledger,afh/ledger,ledger/ledger,duncanmortimer/ledger,ledger/ledger,jwakely/ledger,paulbdavis/ledger,duncanmortimer/ledger,paulbdavis/ledger,duncanmortimer/ledger,paulbdavis/ledger,jwakely/ledger,jwakely/ledger,afh/ledger,paulbdavis/ledger,jwakely/ledger,paulbdavis/ledger,jwakely/ledger,ledger/ledger,duncanmortimer/ledger,afh/ledger,jwakely/ledger,paulbdavis/ledger,jwakely/ledger,duncanmortimer/ledger,afh/ledger,duncanmortimer/ledger,ledger/ledger