refactor: code style changes

Signed-off-by: miguel456 <me@nogueira.codes>

app/Notifications/AppointmentCancelled.php

@@ -5,7 +5,6 @@ namespace App\Notifications;
 use App\Application;
 use Carbon\Carbon;
 use Illuminate\Bus\Queueable;
-use Illuminate\Contracts\Queue\ShouldQueue;
 use Illuminate\Notifications\Messages\MailMessage;
 use Illuminate\Notifications\Notification;
 
@@ -14,7 +13,9 @@ class AppointmentCancelled extends Notification
     use Queueable;
 
     private $application;
+
     private $reason;
+
     private $appointmentDate;
 
     /**
@@ -51,16 +52,16 @@ class AppointmentCancelled extends Notification
         // TODO: Switch to HTML & Blade.
 
         return (new MailMessage)
-            ->greeting("Hi " . $notifiable->name . ",")
+            ->greeting('Hi '.$notifiable->name.',')
             ->from(config('notification.sender.address'), config('notification.sender.name'))
             ->subject(config('app.name').' - interview cancelled')
             ->line('The interview that was previously scheduled with you has been cancelled.')
             ->line('Date and time of the old appointment:  '.$this->appointmentDate)
-            ->line('Your appointment was cancelled for the following reason: ' . $this->reason)
+            ->line('Your appointment was cancelled for the following reason: '.$this->reason)
             ->line('A team member may contact you to reschedule within a new timeframe - you may also let us know of a date and time that suits you.')
             ->line('Your application will likely be declined if you do not reschedule an interview.')
             ->action('View active applications', url(route('showUserApps')))
-            ->salutation('The team at ' . config('app.name'));
+            ->salutation('The team at '.config('app.name'));
     }
 
     /**