Chore(deps-dev): bump prettier from 3.9.6 to 3.9.9 in /docs

Bumps [prettier](https://github.com/prettier/prettier) from 3.9.6 to 3.9.9.
- [Release notes](https://github.com/prettier/prettier/releases)
- [Changelog](https://github.com/prettier/prettier/blob/main/CHANGELOG.md)
- [Commits](prettier/prettier@3.9.6...3.9.9)

---
updated-dependencies:
- dependency-name: prettier
  dependency-version: 3.9.9
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

docs/package-lock.json

@@ -18,7 +18,7 @@
     "eslint": "^10",
     "@eslint/js": "^10",
     "typescript-eslint": "^8.69",
-    "prettier": "^3.9.6",
+    "prettier": "^3.9.9",
     "vitepress": "^1.5.0"
   }
 }