osb/app/Notifications/ResetPassword.php

<?php

namespace App\Notifications;

use App\Models\Site;
use Illuminate\Bus\Queueable;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Auth\Notifications\ResetPassword as ResetPasswordNotification;
use Illuminate\Notifications\Messages\MailMessage;

class ResetPassword extends ResetPasswordNotification implements ShouldQueue
{
	use Queueable;

	/**
	 * Build the mail representation of the notification.
	 *
	 * @param  mixed  $notifiable
	 * @return MailMessage
	 */
	public function toMail($notifiable): MailMessage
	{
		$site = Site::findOrFail($notifiable->site_id);

		if (static::$toMailCallback) {
			return call_user_func(static::$toMailCallback, $notifiable, $this->token);
		}

		return (new MailMessage)
			->markdown('email.user.passwordreset',[
				'site'=>$site,
				'user'=>$notifiable,
				'reset_link'=>route('password.reset',$this->token,true),
			]);
	}
}