Fix build after new docs brought in by oniro main repo

Relevant logs:

/home/andrei/work/oniroproject/ws/docs/oniro/supported-technologies/containers.rst:document isn't included in any toctree

changed milestone to %goofy beta

added SeverityCritical label

assigned to @agherzan

set weight to 1

changed iteration to Oniro Core Iterations Aug 1, 2022 - Aug 31, 2022

added teamdocumentation&UX label

mentioned in commit agherzan/docs@17b19a89

mentioned in merge request !14 (merged)

closed with commit 17b19a89