TBR: "v23/options": Fix comment in model.go
TBR: "v23/options": Fix comment in model.go

resolves vanadium/issues#1116

Change-Id: If209f311711b289ded97ed3ae1a5305bdf1d089b

vanadium/go.v23,vanadium/go.v23,vanadium/go.v23