fix(form_language): call to undefined method

Author: btry

inc/form_language.class.php

@@ -345,7 +345,7 @@ public function showTranslations($options = []) {
       $header = '<tr>';
       $header.= '<th>' . Html::getCheckAllAsCheckbox("translation_list$rand", $rand) . '</th>';
       $header.= '<th>' . __('Original string', 'formcreator') . '</th>';
-      $header.= '<th>' . PluginFormcreatorTranslation::getTypeName(1) . '</th>';
+      $header.= '<th>' . __('Translation', 'Translations', 1, 'formcreator') . '</th>';
       $header.= '</tr>';
       echo $header;
       echo '</thead>';