remaining top nav screenshots plus nav instruction changes

[misterpantz]

Description

This takes care of the remaining screenshot that change because of the new top navigation UI. It also has changes to the text describing top nav. And I added info about private accounts not having regions!

Related issue

n/a

Types of changes

• Functional documentation bug fix (i.e., broken link or some other busted behavior)
• New functional doc capabilities (i.e., filter search results)
• New content
• Revision to existing content
• Chore (non-breaking change that does not add functionality or fix an issue)

Checklist

• I have read the README document about contributing to this repo.
• I have tested my changes locally and there are no issues.
• All commits are signed.

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[github-actions]

PREview has been updated at https://mondoo-pre-docs-3713901669.storage.googleapis.com/docs/index.html

[github-actions]

PREview has been updated at https://mondoo-pre-docs-3713901669.storage.googleapis.com/docs/index.html

[github-actions]

PREview has been updated at https://mondoo-pre-docs-3713901669.storage.googleapis.com/docs/index.html