genesis: add clarifying comment

op-node/cmd/genesis/cmd.go

@@ -63,6 +63,7 @@ var Subcommands = cli.Commands{
 				config.SetDeployments(deployments)
 			}
 
+			// Do the check after setting the deployments
 			if err := config.Check(); err != nil {
 				return fmt.Errorf("deploy config at %s invalid: %w", deployConfig, err)
 			}