Add changelog entry for PR #3213 (#3352)

Co-authored-by: cprecioso <[email protected]>
Co-authored-by: copilot-swe-agent[bot] <[email protected]>
Co-authored-by: Carlos Precioso <[email protected]>

Author: Copilot

waspc/ChangeLog.md

@@ -22,6 +22,7 @@ Remember to check out the [migration guide](https://wasp.sh/docs/migration-guide
 ### 🔧 Small improvements
 
 - Creating a new OpenSaaS project is now much faster (around 20x faster in our testing!). ([#3196](https://github.com/wasp-lang/wasp/pull/3196))
+- Wasp now displays a helpful message when navigating to the backend port, pointing you to the frontend. ([#3213](https://github.com/wasp-lang/wasp/pull/3213))
 
 ### 📖 Documentation