update state management url state example code url

[RClaudiuM]

trafficstars

The scope of this pull request is to fix a broken link on the state management doc file

[netlify[bot]]

✅ Deploy Preview for bulletproof-react-app ready!

Name	Link
🔨 Latest commit	0f016a2b4437bbaf85745760fce60b739f24c6d3
🔍 Latest deploy log	https://app.netlify.com/sites/bulletproof-react-app/deploys/664c579ffb33b00008871388
😎 Deploy Preview	https://deploy-preview-163--bulletproof-react-app.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.