⬆ Bump @docusaurus/plugin-content-docs in /docs_with_docusarus

Bumps [@docusaurus/plugin-content-docs](https://github.com/facebook/docusaurus/tree/HEAD/packages/docusaurus-plugin-content-docs) from 3.8.1 to 3.9.0.
- [Release notes](https://github.com/facebook/docusaurus/releases)
- [Changelog](https://github.com/facebook/docusaurus/blob/main/CHANGELOG.md)
- [Commits](https://github.com/facebook/docusaurus/commits/v3.9.0/packages/docusaurus-plugin-content-docs)

---
updated-dependencies:
- dependency-name: "@docusaurus/plugin-content-docs"
  dependency-version: 3.9.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

docs_with_docusarus/package.json

@@ -28,7 +28,7 @@
   },
   "devDependencies": {
     "@docusaurus/module-type-aliases": "3.8.1",
-    "@docusaurus/plugin-content-docs": "^3.8.1",
+    "@docusaurus/plugin-content-docs": "^3.9.1",
     "@docusaurus/tsconfig": "3.8.1",
     "@docusaurus/types": "3.9.0",
     "remark-mdx-code-meta": "^2.0.0",