fix posthog

Author: bdougie

docs/package-lock.json

@@ -22,6 +22,7 @@
     "@docusaurus/preset-classic": "^3.7.0",
     "@mdx-js/react": "^3.0.0",
     "clsx": "^2.1.0",
+    "posthog-docusaurus": "^2.0.4",
     "prism-react-renderer": "^2.3.1",
     "react": "^18.2.0",
     "react-dom": "^18.2.0"