update frontend js guide with up to date info

[fabiankaegy]

Description of the Change

Closing #

[vercel[bot]]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Comments	Updated
10up-gutenberg-best-practices	✅ Ready (Inspect)	Visit Preview	💬 Add your feedback	Feb 7, 2023 at 6:42AM (UTC)