minor change in test_numby.lua regarding SUMBY directory -> renamed to GRPBY
minor change in test_numby.lua regarding SUMBY directory -> renamed to GRPBY

NerdWalletOSS/Q,NerdWalletOSS/Q,NerdWalletOSS/Q,NerdWalletOSS/Q,NerdWalletOSS/Q,NerdWalletOSS/Q,NerdWalletOSS/Q,NerdWalletOSS/Q