Release notes navigation buttons are confusing

### Bug Summary

The "Next" and "Previous" buttons are seemingly backwards for navigating between version pages.

### Steps to Reproduce

Go to: https://docs.harperdb.io/release-notes/v4-tucker/4.6.8

### Expected Behavior

It should render in the correct order

### Actual Behavior

See how "Previous" is 4.7 and "Next" is 4.6.7

### Page URL

https://docs.harperdb.io/release-notes/v4-tucker/4.6.8

### Browser

Chrome

### Device/OS

_No response_

### Console Errors

_No response_

### Screenshots or Videos

### Additional Context

_No response_

### Are you planning to fix this issue?

No, just reporting the issue

### First-time contributor support

- [ ] I'm new to contributing and would appreciate guidance on the process
- [ ] I'd like help understanding the project structure
- [ ] I need assistance with setting up the development environment
- [ ] I'm comfortable contributing but new to this project specifically