Fix doc on create new post on source code

[deerawan]

I got an error when following the documentation for this part below:

$route = 'foo/bar';
$data = ['param1' => 'foo', 'param2' => 'bar'];
Yii::$app->queue->post(new Job($route, $data));

The error said

PHP Warning – yii\base\ErrorException

Invalid argument supplied for foreach()

1. in /Users/masbugan/Sites/gado/yiisoft/yii2/BaseYii.php at line517
508509510511512513514515516517518519520521522523524525526


    /**
     * Configures an object with the initial property values.
     * @param object $object the object to be configured
     * @param array $properties the property initial values given in terms of name-value pairs.
     * @return object the object itself
     */
    public static function configure($object, $properties)
    {
        foreach ($properties as $name => $value) {
            $object->$name = $value;
        }

        return $object;
    }

    /**
     * Returns the public member variables of an object.
     * This method is provided such that we can get the public member variables of an object.

2. in /Users/masbugan/Sites/gado/vendor/yiisoft/yii2/BaseYii.php – yii\base\ErrorHandler::handleError(2, 'Invalid argument supplied for fo...', '/Users/masbugan/Sites/gado-...', 517, ...)at line517
3. in /Users/masbugan/Sites/gado/vendor/yiisoft/yii2/base/Object.php – yii\BaseYii::configure(UrbanIndo\Yii2\Queue\Job, 'foo/bar')at line105

The last line is supposed to be

Yii::$app->queue->post(new Job(['route' => $route, 'data' => $data]));