build(deps): bump react and react-dom in /docs

Bumps [react](https://github.com/facebook/react/tree/HEAD/packages/react) and [react-dom](https://github.com/facebook/react/tree/HEAD/packages/react-dom). These dependencies needed to be updated together.

Updates `react` from 17.0.2 to 18.0.0
- [Release notes](https://github.com/facebook/react/releases)
- [Changelog](https://github.com/facebook/react/blob/main/CHANGELOG.md)
- [Commits](https://github.com/facebook/react/commits/v18.0.0/packages/react)

Updates `react-dom` from 17.0.2 to 18.0.0
- [Release notes](https://github.com/facebook/react/releases)
- [Changelog](https://github.com/facebook/react/blob/main/CHANGELOG.md)
- [Commits](https://github.com/facebook/react/commits/v18.0.0/packages/react-dom)

---
updated-dependencies:
- dependency-name: react
  dependency-type: direct:production
  update-type: version-update:semver-major
- dependency-name: react-dom
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

docs/package.json

@@ -41,8 +41,8 @@
     "prism-react-renderer": "^1.3.1",
     "prop-types": "^15.8.1",
     "puppeteer": "^13.5.2",
-    "react": "^17.0.2",
-    "react-dom": "^17.0.2",
+    "react": "^18.0.0",
+    "react-dom": "^18.0.0",
     "react-headroom": "^3.2.0",
     "react-helmet": "^6.1.0",
     "react-icons": "^4.3.1",