updated typo by code review

Author: stefanak-michal

src/Bolt.php

@@ -171,7 +171,7 @@ private function unpackProtocolVersion()
     }
 
     /**
-     * PackException requested protocol versions
+     * Pack requested protocol versions
      * @return string
      */
     private function packProtocolVersions(): string

src/PackStream/v1/Packer.php

@@ -20,7 +20,7 @@ class Packer implements IPacker
     private const HUGE = 4294967295;
 
     /**
-     * PackException message with parameters
+     * Pack message with parameters
      * @param $signature
      * @param mixed ...$params
      * @return string

src/PackStream/v1/Unpacker.php

@@ -51,7 +51,7 @@ class Unpacker implements IUnpacker
     ];
 
     /**
-     * UnpackException message
+     * Unpack message
      * @param string $msg
      * @param int &$signature
      * @return mixed

src/error/MessageException.php

@@ -1,16 +1,17 @@
 <?php
 
-
 namespace Bolt\error;
 
+use Exception;
+
 /**
  * Class MessageException
  *
  * @author Michal Stefanak
  * @link https://github.com/stefanak-michal/Bolt
  * @package Bolt\error
  */
-class MessageException extends \Exception
+class MessageException extends Exception
 {
 
-}
+}

src/error/PackException.php

@@ -14,4 +14,4 @@
 class PackException extends Exception
 {
 
-}
+}

src/error/UnpackException.php

@@ -14,4 +14,4 @@
 class UnpackException extends Exception
 {
 
-}
+}