Revise configuration-related docs

[josh-wong]

Description

This PR revises configuration-related documents.

Related issues and/or PRs

N/A

Changes made

• Revised contents.
• Added notice blocks for noteworthy content.
• Added content tabs for databases (in configurations.md).
• Added Mermaid code for some diagrams (in configurations.md).

Branches this PR applies to

Note

The configurations.md doc includes mentions of ScalarDB Server, which I don't think we should include in branches 3.10 and 3.9. We'll need to make a separate PR to address the differences between including ScalarDB Server in 3.8 to 3.5 and not including ScalarDB Server in 3.9, 3.10, and master.

• master
• 3.8
• 3.7
• 3.6
• 3.5

Testing done

I ran our docs site locally with these changes and confirmed that these revised docs, including content tabs, notice blocks, images, Mermaid diagrams, and formatting, appeared as expected. Attached are three screenshots for each doc in this PR.

The following screenshot shows configurations.md:

The following screenshot shows two-phase-commit-transactions.md:

The following screenshot shows multi-storage-transactions.md:

Checklist

• I have commented my code, particularly in hard-to-understand areas.
• The documentation has been updated to reflect the changes.
• Any remaining open issues linked to this PR are documented and up-to-date (Jira, GitHub, etc.).
• Tests (unit, integration, etc.) have been added for the changes.
• My changes generate no new warnings.
• Any dependent changes in other PRs have been merged and published.

Additional notes (optional)

Please see my comments in the revised files.

[komamitsu]

LGTM! Thanks!

[choplin]

LGTM!

[josh-wong]

As discussed with @feeblefakie, I will be closing this PR and creating a new PR that includes the changes to these docs and targets branch 3.8.

I mistakenly used the docs from the master branch and therefore cannot easily merge the changes by simply switching the target branch since there are many other upstream changes that are irrelevant to branches 3.8 and earlier that would be applied🙇🏻‍♂️