Limit error on sending messages to multiple admins using the melipayamak gateway

Hi, in the class_gateways.php file, inside the melipayamakpattern method, there is a small bug. The phone numbers are currently joined by a comma, and then the message is sent using the SendByBaseNumber3 method.

However, the melipayamak API only allows one phone number at a time [1], which prevents us from setting multiple admin numbers in the plugin configuration.

Can you please fix this part of the plugin? (perhaps by adding a loop for the number list?)

Thanks for your great plugin.