Link each mention of a React API in rendering-elements.md to the reference docs.
On this page replace every static occurrence of `ReactDOM.render()` by link to the reference docs [`ReactDOM.render()`](/docs/react-dom.html#render)
Is this in the right direction @sophiebits ? 🤔
ref #2630
Adds a new docs website, built with Gatsby JS, to replace the old Jekyll site. Source code for the new site lives in /www (although markdown and YML data still comes from the legacy /docs folder).
Changes to either markdown or website source code can be previewed on Netlify. The react-js bot should automatically add comments to each PR with preview links. (This preview is generated by running the newly-added yarn build:docs command in the root package.json.)
The majority of the changes in this PR are contained within the new /www directory. However some minor modifications have been made to existing content in the /docs directory:
* Modified frontmatter author block to always be an array
* Small markdown formatting tweaks