docs: improved PHPDocs

Author: alexsoft

src/PushbulletChannel.php

@@ -44,7 +44,8 @@ public function send($notifiable, Notification $notification): void
 
     /**
      * @param $notifiable
-     * @return \NotificationChannels\Pushbullet\Targets\Targetable|void
+     *
+     * @return \NotificationChannels\Pushbullet\Targets\Targetable|null
      */
     private function getTarget($notifiable): ?Targetable
     {

src/PushbulletMessage.php

@@ -136,7 +136,7 @@ public function url($url): self
     /**
      * Get array representation of message for Pushbullet client.
      *
-     * @return array
+     * @return array{type: string, title: string, body: string, url?: string, channel_tag?: string, device_iden?: string, email?: string, }
      */
     public function toArray(): array
     {
@@ -162,7 +162,7 @@ private function isLink(): bool
     }
 
     /**
-     * @return array
+     * @return array{url?: string}
      */
     private function getUrlParameter(): array
     {

src/Targets/Channel.php

@@ -24,7 +24,7 @@ public function __construct($channelTag)
     }
 
     /**
-     * {@inheritdoc}
+     * @return array{channel_tag: string}
      */
     public function getTarget(): array
     {

src/Targets/Device.php

@@ -24,7 +24,7 @@ public function __construct($device)
     }
 
     /**
-     * {@inheritdoc}
+     * @return array{device_iden: string}
      */
     public function getTarget(): array
     {

src/Targets/Email.php

@@ -30,7 +30,7 @@ public function __construct($email)
     }
 
     /**
-     * {@inheritdoc}
+     * @return array{email: string}
      */
     public function getTarget(): array
     {