fixed Coding Standard errors

ActiveField.php

@@ -254,7 +254,7 @@ class ActiveField extends \yii\widgets\ActiveField
                     'labelOptions' => ['class' => 'checkbox-inline'],
                 ];
             }
-        }  elseif (!isset($options['item'])) {
+        } elseif (!isset($options['item'])) {
             $options['item'] = function ($index, $label, $name, $checked, $value) {
                 return '<div class="checkbox">' . Html::checkbox($name, $checked, ['label' => $label, 'value' => $value]) . '</div>';
             };
@@ -280,7 +280,7 @@ class ActiveField extends \yii\widgets\ActiveField
                     'labelOptions' => ['class' => 'radio-inline'],
                 ];
             }
-        }  elseif (!isset($options['item'])) {
+        } elseif (!isset($options['item'])) {
             $options['item'] = function ($index, $label, $name, $checked, $value) {
                 return '<div class="radio">' . Html::radio($name, $checked, ['label' => $label, 'value' => $value]) . '</div>';
             };