[Bug Report] - best-practices.md is cosmetically different between the main deployed doc and the one in versioned_docs/version-2.1.0

[tkfu]

Describe the bug.

The best practices document at /docs/deployment/best-practices.md should be identical to the one at versioned_docsversion-2.1.0/deployment/best-practices.md, but it isn't. The changes appear to just be related to formatting and other minor issues, but nevertheless we shouldn't have them.

Describe the steps to reproduce the behavior.

No response

Expected behavior.

• Instead of using path-relative links (i.e. ../../file.md), we should use site-root-relative links (i.e. /static/papers/assets/file.pdf)
• Intra-document links should always link to the same document via relative URI (i.e. [Key Management](#4-managing-signing-keys-and-metadata-expiration), not by absolute path (i.e. [Key Management](https://uptane.github.io/docs/deployment/best-practices#4-managing-signing-keys-and-metadata-expiration).
• No cosmetic changes should be made, e.g. adding/removing bolding on section titles

Screenshots.

No response

Operating environment

No response

What browsers are you seeing the problem on?

No response

Additional context

As a general practice, the documents in /docs should never be changed directly, nor should any document under versioned_docs. The one in /docs should only change when we officially cut a release, and in that case should only be changed to bring in the accepted changes under version-future.