[tests] Add examples parameter to DocTests
[tests] Add examples parameter to DocTests

to test the given examples only instead of every example.
duncanmortimer/ledger,jwakely/ledger,ledger/ledger,duncanmortimer/ledger,duncanmortimer/ledger,paulbdavis/ledger,duncanmortimer/ledger,paulbdavis/ledger,paulbdavis/ledger,afh/ledger,afh/ledger,jwakely/ledger,jwakely/ledger,jwakely/ledger,afh/ledger,afh/ledger,jwakely/ledger,jwakely/ledger,ledger/ledger,duncanmortimer/ledger,paulbdavis/ledger,paulbdavis/ledger,duncanmortimer/ledger,paulbdavis/ledger,afh/ledger,paulbdavis/ledger,duncanmortimer/ledger,ledger/ledger,ledger/ledger,jwakely/ledger,ledger/ledger