Prettifying Example Payload Stopped Working

[AceTheCreator]

Describe the bug

I created this issue a while back, supported with a PR, but it has stopped working. Any idea why? cc @gorkem @msivasubramaniaan

Expected Behavior

I expect when previewing the example, it should look well-formatted

Current Behavior

Looks like this

Environment

• [ ] Windows
• [x] Mac
• [ ] Linux
• [ ] other (please specify)