[cs] add and apply psr2

src/DocBlock/Serializer.php

@@ -121,6 +121,7 @@ class Serializer
             $text = wordwrap($text, $wrapLength);
             return $text;
         }
+
         return $text;
     }
 
@@ -138,6 +139,7 @@ class Serializer
             if ($wrapLength !== null) {
                 $tagText = wordwrap($tagText, $wrapLength);
             }
+
             $tagText = str_replace("\n", "\n{$indent} * ", $tagText);
 
             $comment .= "{$indent} * {$tagText}\n";