Move setting $apiUrl

[CrazyRedScorp]

Hi, maybe move the setting apiUrl from file SmscRuApi.php

protected $apiUrl = 'https://smsc.ru/sys/send.php';

in the configuration file config/services.php. Example:

// config/services.php
...
'smscru' => [
    'url'  => env('SMSCRU_URL'),
    'login'  => env('SMSCRU_LOGIN'),
    'secret' => env('SMSCRU_SECRET'),
    'sender' => 'John_Doe'
],
...

I need to change only the address smsc.ru to smsc.kz. This services identical. Thank.