Add PHPDocs

Author: natanfelles

src/Config.php

@@ -317,6 +317,10 @@ public function setHeaderComment(string $header) : static
  return $this;
  }
 
+ /**
+ * @param string $packageName
+ * @param array<string>|string $copyright
+ */
  public function setDefaultHeaderComment(
  string $packageName,
  array | string $copyright = []