Update blobstore and communty docs

[achrinza]

This PR is two changes, one commit each:

1. Blobstore docs: Removed inaccurate info and note the potential blobstore config footgun.
2. Community docs: Updated stale information (to the best of my knowledge).

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: ASSERTIVE

Plan: Pro

Run ID: df08d42d-4967-40d2-b9fa-50a019b1b546

📥 Commits

Reviewing files that changed from the base of the PR and between 7c42efb and c28449d.

📒 Files selected for processing (5)

• content/community.md
• content/create-release.md
• content/package-vendoring.md
• content/release-blobstore.md
• mkdocs.yml

Walkthrough

The pull request updates several BOSH documentation files. content/community.md revises community resource sections: the Slack section gains an invite admonition, the GitHub section drops cloudfoundry-incubator in favor of cloudfoundry, the Roadmap section replaces Pivotal Tracker with GitHub Projects, and the Ultimate Guide to BOSH link changes to a Web Archive URL. content/package-vendoring.md updates the vendor-package guidance to reference packages from the cloudfoundry org. content/release-blobstore.md narrows scope to CLI v2+ release publishing, removes the Azure provider and its configuration section, and adds a warning documenting CLI v2's shallow-merge behavior between config/private.yml and config/final.yml. content/create-release.md removes blobstore_secret from the example and adds a corresponding CLI v2 merge warning. mkdocs.yml adds an Azure Storage Account navigation entry under Configuring the Blobstore.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title directly relates to the main changes in the PR: updates to blobstore documentation and community documentation, though it contains a minor typo ('communty' instead of 'community').
Description check	✅ Passed	The description accurately summarizes the two main changes in the PR: blobstore documentation updates and community documentation updates, with sufficient detail about what was changed.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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[coderabbitai]

Actionable comments posted: 2

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@content/create-release.md`:
- Around line 690-695: In the warning block titled "Managing split-configuration
between `private.yml` and `final.yml`", fix the subject-verb agreement error in
the sentence beginning with "the value of `/blobstore/<provider>/`". Change
"take precedence over" to "takes precedence over" so that the plural verb agrees
with the singular subject "value". This same grammar fix should also be applied
to the duplicate warning text in `release-blobstore.md` to maintain consistency
across both files.

In `@content/release-blobstore.md`:
- Around line 13-20: The warning block in the release-blobstore.md file contains
a subject-verb agreement error. The phrase "the value of
`/blobstore/<provider>/` in `private.yml` is shallow-merged with, and take
precedence over" uses the plural verb "take" with the singular subject "value".
Change "take" to "takes" to ensure proper grammatical agreement between the
subject and both verbs in the compound predicate.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: ASSERTIVE

Plan: Pro

Run ID: 3d72e0cc-17f3-4ca7-af82-b3ab934beae5

📥 Commits

Reviewing files that changed from the base of the PR and between ac13a4b and 7c42efb.

📒 Files selected for processing (5)

• content/community.md
• content/create-release.md
• content/package-vendoring.md
• content/release-blobstore.md
• mkdocs.yml