Update A Docblock

I missed adding the new properties in earlier

src/Endpoints/CustomHostnames.php

@@ -127,6 +127,10 @@ class CustomHostnames implements API
      * @param string    $sslType
      * @param array     $sslSettings
      * @param string    $customOriginServer
+     * @param bool|null $wildcard
+     * @param string    $bundleMethod
+     * @param string    $customKey
+     * @param string    $customCertificate
      * @return \stdClass
      */
     public function updateHostname(