Bump fumadocs-ui from 15.8.3 to 15.8.5 in /docs

Bumps [fumadocs-ui](https://github.com/fuma-nama/fumadocs) from 15.8.3 to 15.8.5.
- [Release notes](https://github.com/fuma-nama/fumadocs/releases)
- [Commits](https://github.com/fuma-nama/fumadocs/commits)

---
updated-dependencies:
- dependency-name: fumadocs-ui
  dependency-version: 15.8.5
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

docs/package-lock.json

@@ -14,7 +14,7 @@
     "fumadocs-core": "^15.8.1",
     "fumadocs-mdx": "^12.0.2",
     "fumadocs-typescript": "^4.0.11",
-    "fumadocs-ui": "^15.8.3",
+    "fumadocs-ui": "^15.8.5",
     "next": "^15.5.4",
     "react": "^19.0.0",
     "react-dom": "^19.2.0"