Fix broken links and anchors flagged by docusaurus build

[rosensilva]

Why

npm run build was warning on 9 broken markdown links and 1 broken anchor. Anchor fixes from a recent merge covered two of them; this PR closes the rest so the production build runs clean.

What

Markdown link path corrections (relative paths now point at existing files):

• intercom/overview → connectors overview was off by one ..
• twilio/4.0.x/overview → setup-guide lives at the parent twilio/ dir, not in the version subdir
• database/mssql/example & database/redis/example → both now point at the real develop/create-integrations/create-new-integration
• event/azure-service-bus → connector dir is asb/, not azure-service-bus/
• file/high-availability → one extra ../ was escaping /docs/
• reference/overview & reference/protocols → data-formats.md is a directory; pointed to its index.md

Anchor:

• intercom/action-reference → setup-guide step renumbered from step-6-… to step-5-…

Page link:

• get-started/key-concepts → /docs/develop/organize-code/ had no index page; pointed at /docs/develop/organize-code/overview

No content rewrites — only the link targets/relative paths.

Verify

npm run build runs clean: no broken-link / broken-anchor warnings.

🤖 Generated with Claude Code

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 9c98dd43-e408-4e6d-a97d-50eeef961908

📥 Commits

Reviewing files that changed from the base of the PR and between 81c0058 and daf261f.

📒 Files selected for processing (10)

• en/docs/connectors/catalog/communication/intercom/action-reference.md
• en/docs/connectors/catalog/communication/intercom/overview.md
• en/docs/connectors/catalog/communication/twilio/4.0.x/overview.md
• en/docs/connectors/catalog/database/mssql/example.md
• en/docs/connectors/catalog/database/redis/example.md
• en/docs/develop/integration-artifacts/event/azure-service-bus.md
• en/docs/develop/integration-artifacts/file/high-availability.md
• en/docs/get-started/key-concepts.md
• en/docs/reference/overview.md
• en/docs/reference/protocols.md

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🧪 Generate unit tests (beta)

• Create PR with unit tests

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