cmd/gomote: fix formatting error

For streaming the command output from "gomote run", a printf
should be print. Otherwise,

	$ gomote run $VM /bin/echo %d
	# Streaming results ...
	%!d(MISSING)
	# Wrote results ...

Change-Id: I8ae879fd6ef6dc68b7cba1f7a723dcd3c6fbd0e7
Reviewed-on: https://go-review.googlesource.com/c/build/+/453096
Run-TryBot: Cherry Mui <[email protected]>
TryBot-Result: Gopher Robot <[email protected]>
Reviewed-by: Michael Knyszek <[email protected]>

Author: cherrymui

cmd/gomote/run.go

@@ -363,7 +363,7 @@ func doRun(ctx context.Context, inst, cmd string, cmdArgs []string, opts ...runO
 			// remote error
 			return fmt.Errorf("unable to execute %s: %w", cmd, err)
 		}
-		fmt.Fprintf(outWriter, string(update.GetOutput()))
+		fmt.Fprint(outWriter, string(update.GetOutput()))
 	}
 }