Fix CHANGELOG.md markdown

[maunzCache]

Is your request related to a new offering from AWS?

Nope, not at all.

Is your request related to a problem? Please describe.

The markdown of the changelog file is a bit messed up.

Describe the solution you'd like.

The headline "Changelog" is included twice and some versions have mixed up header sizes as well. Also since 2.11.1 versioning scheme has been changed which drops the "v" prefix. I guess this is not correctly documented as the actual tag still contain that character.

Edit: Oh version 2.3.0 has no changelog at all. Or that is written with magic ink and i cannot get my display to show it.

Describe alternatives you've considered.

Ignoring it but i really cannot :(

Additional context

Include markdownlinter in pre-commit hook

[antonbabenko]

Thanks for reporting this issue. It is weird that the problem is only in this repository and not in VPC module, for example.

/cc @bryantbiggs Do you have any ideas why https://github.com/terraform-aws-modules/terraform-aws-s3-bucket/blob/master/CHANGELOG.md looks broken?

[bryantbiggs]

looks like when I did the switchover from gitchglog to semantic-release, I just forgot to clear the header from the existing changelog file fa76ac6

the differences over time in the release titles is due to two different tools used (gitchnglog and semantic-release)

[antonbabenko]

This issue has been resolved in version 2.14.0 🎉

[github-actions]

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