Empty section should be hidden

[rome-user]

The following section currently appears as an empty header in the Shadow CLJS user guide.

shadow-cljs.github.io/docs/UsersGuide.adoc

Lines 570 to 573 in dabc854

	== Creating `npm` packages
	// TODO: Thomas: I think it would be useful to show a package.json and a little bit of an example
	// on how you could set up to deploy this on NPM.

I think it should be commented out until an example is ready. I can possibly make one this weekend.