fix: replace /{{ page.lang }}/changelog/4x.html with /en/changelog/

[peterdanwan]

This PR:

• changes the link in _includes/header/header-th.html:
  • from: <a href="/{{ page.lang }}/changelog/4x.html">บันทึกการเปลี่ยนแปลง</a>
  • to: <a href="/en/changelog/">บันทึกการเปลี่ยนแปลง</a>
• changes the link in _includes/header/header-id.html:
  • from: <a href="/{{ page.lang }}/changelog/4x.html">Release Change Log</a>
  • to: <a href="/en/changelog/">Release Change Log</a>
• adds the css/uz.css file, following the same styles as css/tr.css
• attempts to close Broken link and missing page #1684

Demonstration of http://localhost:4000/id/ Release Change Log link working:

2024-11-17.15-00-17.mp4

Demonstration of http://localhost:4000/th/ Release Change Log link working:

2024-11-17.15-01-32.mp4

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[chrisdel101]

These changes look good to me. Thanks for your contribution!
We'll have a few other members approve it and then it should be good to go.

[peterdanwan]

These changes look good to me. Thanks for your contribution! We'll have a few other members approve it and then it should be good to go.

My pleasure! If there's anything else regarding this issue, please let me know. I'm happy to try and help