docs: Update oniro host at EF

Relate-to: eclipse/oniro-core/oniro#787 (closed) Forwarded: https://gitlab.eclipse.org/eclipse/oniro-blueprints/vending-machine/meta-oniro-blueprints-vending-machine/pulls?q=author%3Apcoval Signed-off-by: Philippe Coval philippe.coval.ext@huawei.com