Apply PHP CS Fixer changes

Author: irazasyed

src/Components/Button.php

@@ -114,6 +114,8 @@ public function phone(string $phone): self
     }
 
     /**
+     * @param mixed $postback
+     *
      * @return $this
      *
      * @throws CouldNotCreateButton|\JsonException

src/Facebook.php

@@ -34,6 +34,8 @@ public function __construct(string $token = null, HttpClient $httpClient = null)
 
     /**
      * Set Default Graph API Version.
+     *
+     * @param mixed $graphApiVersion
      */
     public function setGraphApiVersion($graphApiVersion): self
     {

src/FacebookMessage.php

@@ -267,6 +267,8 @@ public function isUpdate(): self
     /**
      * Helper to set messaging type as MESSAGE_TAG.
      *
+     * @param mixed $messageTag
+     *
      * @return $this
      */
     public function isMessageTag($messageTag): self