Only fixes up URL field value if it's non-empty.

[netlify[bot]]

✅ Deploy Preview for ueo ready!

Name	Link
🔨 Latest commit	14d08912a920b9d59592e7c74f23c13234a1012d
🔍 Latest deploy log	https://app.netlify.com/sites/ueo/deploys/652f2d7556d41c00089c6822
😎 Deploy Preview	https://deploy-preview-534--ueo.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.