Editing a page in a Hugo based JAM stack with Netlify CMS

hi, I’m trying to edit https://github.com/kaihendry/netlify-cms-testing/blob/master/content/contact-us.md via Netlify CMS.

Using https://github.com/netlify-templates/one-click-hugo-cms/blob/master/site/static/admin/config.yml as a reference I created https://github.com/kaihendry/netlify-cms-testing/blob/master/static/admin/config.yml#L23

But it doesn’t appear to work:

What am I missing?

BONUS Question: Can Netlify edit i18n pages like

Hi @kaihendry, can you try file: "content/contact-us.md" instead of file: "site/content/contact-us.md"?
For multi-language support and workarounds see https://github.com/netlify/netlify-cms/issues/716