fix: url for backend api endpoint

[netlify[bot]]

✅ Deploy Preview for my-cowry ready!

Name	Link
🔨 Latest commit	2048d0472aaa74b45e8e492927903ebf88294641
🔍 Latest deploy log	https://app.netlify.com/sites/my-cowry/deploys/664334e757e9ac000824658f
😎 Deploy Preview	https://deploy-preview-19--my-cowry.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.