clarify dependencies between performance, retention time and disk space

[hisImminence]

Description

Based on the discussions with @chDame, this PR should clarify the dependencies on performance, data retention time configuration and ES disk space more clearly.

• Assigning @chDame to check if this PR really enlightens the mentioned dependencies
• Assigning @rodrigo-lourenco-lopes to verify the technical details make sense
• Assigning @mesellings as the main DRI for this page

--> this change is relevant for 8.6+

When should this change go live?

• This is a bug fix, security concern, or something that needs urgent release support.
• This is already available but undocumented and should be released within a week.
• This on a specific schedule and the assignee will coordinate a release with the DevEx team. (apply hold label or convert to draft PR)
• This is part of a scheduled alpha or minor. (apply alpha or minor label)
• There is no urgency with this change and can be released at any time.

PR Checklist

• My changes are for an already released minor and are in /versioned_docs directory.
• My changes are for the next minor and are in /docs directory (aka /next/).

• My changes require an Engineering review, and I've assigned the Engineering DRI or delegate.
• My changes require a technical writer review, and I've assigned @camunda/tech-writers as a reviewer.

[mesellings]

Lgtm - I've committed some small changes to help with readability & conciseness 👍

[github-actions]

The preview environment relating to the commit 4dc711b has successfully been deployed. You can access it at https://preview.docs.camunda.cloud/pr-4522/index.html

[chDame]

Seems good to me.

[rodrigo-lourenco-lopes]

The new details added make sense. Thanks 🙌