[27.x] cli: fix non-constant format string in call to errors.Errorf (govet)

cli/required.go:17:24: printf: non-constant format string in call to github.com/docker/cli/vendor/github.com/pkg/errors.Errorf (govet)
     		return errors.Errorf("\n" + strings.TrimRight(cmd.UsageString(), "\n"))
     		                     ^

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

cli/required.go

@@ -14,7 +14,7 @@ func NoArgs(cmd *cobra.Command, args []string) error {
 	}
 
 	if cmd.HasSubCommands() {
-		return errors.Errorf("\n" + strings.TrimRight(cmd.UsageString(), "\n"))
+		return errors.New("\n" + strings.TrimRight(cmd.UsageString(), "\n"))
 	}
 
 	return errors.Errorf(