Fix broken changelog links in release announcements

[markapruett]

The changelog links go to a 404. Correct these to link to the files correctly. Example: https://github.com/aws/eks-distro/releases

Is this because we reuse the same text for the docs site and the release page?

[dublinsubway]

Hiya. I can work on this, but since it might entail giving me too much access - that's fine if I can't. Links for reference:

https://distro.eks.amazonaws.com/releases/1-23/5/CHANGELOG-v1-23-eks-5 - docs site link

https://github.com/aws/eks-distro/blob/v1-23-eks-5/CHANGELOG-v1-23-eks-5.md - broken link from announcements

https://github.com/aws/eks-distro/blob/main/docs/contents/releases/1-23/5/CHANGELOG-v1-23-eks-5.md - working link

[markapruett]

Thanks @dublinsubway! You should be able to see everything you need to make these changes in the EKS-D repo.

[kschumy]

We want to remove the For additional information, see the changelog for this release. line from the releases page BUT keep it on the index.md for the release (example)

[markapruett]

@zafs23 @kschumy Can this ticket be closed out?

[zafs23]

After releasing all the github release docs will close this ticket