add spacing consistency around phpdoc attributes

src/Composer/Factory.php

@@ -62,7 +62,6 @@ class Factory
 
     /**
      * @param string $home
-     *
      * @return string
      */
     protected static function getCacheDir($home)
@@ -414,7 +413,6 @@ class Factory
     /**
      * @param Config                     $config The configuration
      * @param Downloader\DownloadManager $dm     Manager use to download sources
-     *
      * @return Archiver\ArchiveManager
      */
     public function createArchiveManager(Config $config, Downloader\DownloadManager $dm = null)