Changelog rendering for unreleased - summary seems to be broken

[mmattel]

While working on the release notes for 5.0.2, checking the lastest changelog locally in my browser, I saw that rendering of the summary section of unreleased is broken, see image.

Summary * Bugfix should be:

Summary
* Bugfix ...

And each * Bugfix should be on its own line.

@micbar

[micbar]

@JammingBen @kulmann This is the web changelog details. Can we make that render better?