chore: bump @docusaurus/core from 3.8.1 to 3.9.1 in /site (#371)

* chore: bump @docusaurus/core from 3.8.1 to 3.9.1 in /site

Bumps [@docusaurus/core](https://github.com/facebook/docusaurus/tree/HEAD/packages/docusaurus) from 3.8.1 to 3.9.1.
- [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/v3.9.1/packages/docusaurus)

---
updated-dependencies:
- dependency-name: "@docusaurus/core"
  dependency-version: 3.9.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

* chore: update docusaurus config

* chore: update other docusaurus deps

---------

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Marcos Sevilla <[email protected]>

Author: dependabot[bot]

site/docusaurus.config.js

@@ -11,23 +11,25 @@ const config = {
   url: 'https://workflows.vgv.dev',
   baseUrl: '/',
   onBrokenLinks: 'throw',
-  onBrokenMarkdownLinks: 'warn',
   favicon: 'img/favicon.ico',
   trailingSlash: false,
-
   // GitHub pages deployment config.
   // If you aren't using GitHub pages, you don't need these.
-  organizationName: 'VeryGoodOpenSource', // Usually your GitHub org/user name.
   projectName: 'very_good_workflows', // Usually your repo name.
-
+  organizationName: 'VeryGoodOpenSource', // Usually your GitHub org/user name.
   // Even if you don't use internalization, you can use this field to set useful
   // metadata like html lang. For example, if your site is Chinese, you may want
   // to replace "en" with "zh-Hans".
   i18n: {
     defaultLocale: 'en',
     locales: ['en'],
   },
-
+  markdown: {
+    hooks: {
+      onBrokenMarkdownLinks: 'warn',
+      onBrokenMarkdownImages: 'throw',
+    },
+  },
   presets: [
     [
       'classic',