jameda.module

<?php

use Drupal\Core\Routing\RouteMatchInterface;
use Drupal\Core\Url;

/**
 * Implements hook_help().
 */
function jameda_help($route_name, RouteMatchInterface $route_match) {
  switch ($route_name) {
    case 'help.page.jameda':
    case 'jameda.settings_form':
      return t('<a href=":url">Jameda API Version 1 URL</a> Video Chat API Integration Script. You need to apply for this service by registration at jameda.de medical rating website.', [':url' => 'https://www.jameda.de/api/otb-widget/']);
  }
}