Add reference to Stripe API documentation in stripe.php

Include a docblock with a link to the Stripe API customer creation docs. This provides developers with quick access to relevant documentation, improving code clarity and usability.

services/nginx/app/classes/stripe.php

@@ -25,6 +25,10 @@ use stripe\endpoints\stripe_endpoint_product;
 use stripe\stripe_c;
 use Stripe\StripeClient;
 
+/**
+ * Stripe module
+ * @see https://docs.stripe.com/api/customers/create?lang=php
+ */
 class stripe implements stripe_i
 {
     /**