There is a typo. It should be "bodhi updates download --builds kernel-4.14.11-200.fc26" and not "4.11.14-200", isn't it?
In addition, for Fedora 27, even if it is not mentioned in the article, the command should be: "bodhi updates download --builds kernel-4.14.11-300.fc27", right?
Ciao, Alessio