[Docs Site] fix: changelog scrollbar overflow

[Cherry]

Summary

Resolves a minor issue where the changelog page is overflowing on the X axis . On MacOS, this is less noticeable, but Windows scrollabars are much more ugly and obvious.

URL: https://developers.cloudflare.com/changelog/2025-02-07-new-ways-to-get-started-on-workers/

Before:
After:

cc @KianNH

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