Turn the `metatagai_token` control into a textarea

src/Form/MetatagAIConfigForm.php

@@ -88,7 +88,7 @@ class MetatagAIConfigForm extends ConfigFormBase {
     ];
 
     $form['openai']['metatagai_token'] = [
-      '#type' => 'textfield',
+      '#type' => 'textarea',
       '#title' => $this->t('OpenAI Access Token'),
       '#description' => $this->t('Please provide the OpenAI Access Token here.'),
       '#default_value' => $config->get('metatag_ai.metatagai_token'),