The installer includes a copy of the downloaded files, in case you don't have an internet connection working or the server can't be reached for any reason. In this case, the worse it can happen if it can't download those files, is missing the very latest version of them.
However, as of today, there's no difference between the files you have in the installer and the one that are online now so, your installation is correct, just as if you had a working connection.