docs: fix changelog links and remove versions without corresponding changelogs (#52849)

Summary:
- The  changelog docs has broken links for the pre v0.80 markdowns due to missing extension
- There are links without corresponding changelogs

## Changelog:

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Pick one each for the category and type tags:

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[INTERNAL] [FIXED] - fix changelog links and remove versions without corresponding changelogs

Pull Request resolved: #52849

Test Plan: Click on each link to see if it opens the corresponding page at the specific section

Reviewed By: christophpurrer, cortinico

Differential Revision: D79097825

Pulled By: cipolleschi

fbshipit-source-id: a92e709ccbb45a042175bd198326132bfbf37c65

Author: x-dune