improve cli tx field labels

[danflo27]

for example, when creating a reporter:

input --
layerd tx reporter create-reporter --help
output --
Execute the CreateReporter RPC method
Usage: layerd tx reporter create-reporter [amount] [token-origins] [flags]

Autocli file says

   				RpcMethod:      "CreateReporter",
   				Use:            "create-reporter [commission-rate] [min-tokens-required]",
   				Short:          "Execute the CreateReporter RPC method",
   				PositionalArgs: []*autocliv1.PositionalArgDescriptor{{ProtoField: "commission_rate"}, {ProtoField: "min_tokens_required"}},```, 
so not sure what the disconnect is yet