add code snippet for running checkbox label text through wpml_translate_single_string

Author: dannyvankooten

sample-code-snippets/misc/wpml-translate-checkbox-label.php

@@ -0,0 +1,5 @@
+<?php
+
+add_filter('mc4wp_integration_checkbox_label', function ($text, $integration) {
+    return apply_filters('wpml_translate_single_string', $text, 'mailchimp-for-wp', "{$integration->name} checkbox label");
+}, 10, 2);