Modify the multi-namespace guide for 8.7

[hamza-m-masood]

Description

related issue: https://github.com/camunda/distribution/issues/353
I am modifying the multi-namespace guide for 8.7

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.

[github-actions]

👋 🤖 🤔 Hello, @hamza-m-masood! Did you make your changes in all the right places?

These files were changed only in docs/. You might want to duplicate these changes in versioned_docs/version-8.6/.

• docs/self-managed/setup/guides/multi-namespace-deployment.md

You may have done this intentionally, but we wanted to point it out in case you didn't. You can read more about the versioning within our docs in our documentation guidelines.

[hisImminence]

@hamza-m-masood this can be closed now, or is it worth renaming to 8.8 and keep it open for the next monts?

[akeller]

I don't see much progress on this PR, so I'm assuming it's not going out with alpha4. If this is incorrect, please be prepared to adjust it for the upcoming working mode change.

[akeller]

I'm visiting all 8.7 tagged items to make you aware of the working mode change.

Version 8.7: will be sourced from the /versioned_docs/version-8.7 folder; URL paths will look like /docs/8.7/path/to/doc/.

Please ensure your changes are in the right directory with respect to the version you want to update. Changes currently in this PR would only happen in 8.8. You may want to backport to 8.7.

[christinaausley]

According to @hamza-m-masood this is still relevant for 8.8 but will not be prioritized for awhile.