ci(docs): bump prettier from 3.8.4 to 3.9.4 in /site

Co-authored-by: Chay Nabors <chaynabors@gmail.com>

Author: dependabot[bot]

site/package-lock.json

@@ -43,7 +43,7 @@
     "node-fetch": "^3.3.2",
     "node-html-parser": "^8.0.4",
     "p-limit": "^7.3.0",
-    "prettier": "^3.8.4",
+    "prettier": "^3.9.4",
     "reading-time": "^1.5.0",
     "sanitize-html": "^2.17.5",
     "turndown": "^7.2.2",