To avoid confusion I seperated the `npm run build` and the `npm run dev` commands, beginners might get confused by each command being listed in the same list, thinking they need to run `npm run build` before Astro works properly.
Add `npm run preview` commands to all examples where they are missing
* redesign create astro
* add changeset
* Use npm start
* Update the astro version
* Adds the changeset
Co-authored-by: Fred Schott <fks@Freds-MBP.attlocal.net>
Co-authored-by: Matthew Phillips <matthew@skypack.dev>
