Remove DigitalOcean references in the docs

[marcelovilla]

Reference Issues or PRs

This is a companion docs PR for nebari-dev/nebari#2838 and is related to issue nebari-dev/nebari#2749

What does this implement/fix?

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• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds a feature)
• Breaking change (fix or feature that would cause existing features not to work as expected)
• Documentation Update
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no API changes)
• Build related changes
• Other (please describe):

Testing

• Did you test the pull request locally?
• Did you add new tests?

Documentation

Access-centered content checklist

Text styling

• The content is written with plain language (where relevant).
• If there are headers, they use the proper header tags (with only one level-one header: H1 or # in markdown).
• All links describe where they link to (for example, check the Nebari website).
• This content adheres to the Nebari style guides.

Non-text content

• All content is represented as text (for example, images need alt text, and videos need captions or descriptive transcripts).
• If there are emojis, there are not more than three in a row.
• Don't use flashing GIFs or videos.
• If the content were to be read as plain text, it still makes sense, and no information is missing.

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[marcelovilla]

We still need to update https://github.com/nebari-dev/nebari-docs/blob/76fe01cf96a29752dbc2ecbb1a1d5a57affc36ab/docs/static/img/welcome/nebari_overview_sequence.png to remove the DigitalOcean logo

[dcmcand]

Looks like a missed reference on:

nebari-docs/docs/docs/explanations/advanced-configuration.md

Line 268 in 7728109

- `do` for DigitalOcean

and

nebari-docs/docs/docs/get-started/deploy.mdx

Line 32 in 7728109

Currently, Nebari supports [Amazon AWS][nebari-aws], [DigitalOcean][nebari-do], [Google GCP][nebari-gcp], and [Azure][nebari-azure].

Also, I am guessing this would be in the release notes, but we should have a note explaining why digital ocean is gone.

[marcelovilla]

@dcmcand thanks for the review and for catching those lingering references.

Also, I am guessing this would be in the release notes, but we should have a note explaining why digital ocean is gone.

Correct. I think we should add a note to the release notes explaining this and adding an alternative for users that might still want to use Nebari in DigitalOcean (i.e., using the existing option)