[DOCS-14689] Add US1 and AP2 PrivateLink VPC Endpoint Service IDs reference tables (#37476)

* Add AP2 VPC Endpoint Service IDs reference table to PrivateLink docs

Co-authored-by: Pi <noreply+claude-sonnet-4-6@example.org>

* Move VPC Endpoint Service IDs heading outside site-region block for TOC visibility

Co-authored-by: Pi <noreply+claude-sonnet-4-6@example.org>

* Fix VPC Endpoint Service IDs TOC visibility for AP2 only

- Move heading back inside site-region ap2 block so hideTOCItems()
  hides the nav entry for US1/AP1 (selector targets direct children of
  d-none site-region-container)
- Extend table-of-contents.html condition to trigger scraped-toc.html
  for pages using {{% site-region %}} (markdown shortcode), not just
  {{< site-region >}} (HTML shortcode) — scraped-toc was designed for
  exactly this case

Co-authored-by: Pi <noreply+claude-sonnet-4-6@example.org>

* Revert table-of-contents.html site-region condition change

Co-authored-by: Pi <noreply+claude-sonnet-4-6@example.org>

* Replace 'CNAMEs' with 'maps to' per PR feedback

Co-authored-by: Pi <noreply+claude-sonnet-4-6@example.org>

* [DOCS-14689] Add US1 PrivateLink VPC Endpoint Service IDs reference table (#37489)

* [DOCS-14689] Add US1 PrivateLink VPC Endpoint Service IDs reference table

Co-authored-by: Pi <noreply+claude-sonnet-4-6@example.org>

* Add orchid (api/synthetics) to US1 PrivateLink table

Co-authored-by: Pi <noreply+claude-sonnet-4-6@example.org>

* Remove duplicate inline table from cross-region tab; keep single VPC Endpoint Service IDs section

Co-authored-by: Pi <noreply+claude-sonnet-4-6@example.org>

* Remove legacy api.datadoghq.com --- entry; orchid color anchor confirmed in public DNS

Co-authored-by: Pi <noreply+claude-sonnet-4-6@example.org>

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Co-authored-by: Pi <noreply+claude-sonnet-4-6@example.org>

* Remove redundant US1 PrivateLink service names link; update table anchor to vpc-endpoint-service-ids

Co-authored-by: Pi <noreply+claude-sonnet-4-6@example.org>

* Apply suggestions from code review

Co-authored-by: Rosa Trieu <107086888+rtrieu@users.noreply.github.com>

* Update content/en/agent/guide/private-link.md

Co-authored-by: Rosa Trieu <107086888+rtrieu@users.noreply.github.com>

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Co-authored-by: Pi <noreply+claude-sonnet-4-6@example.org>
Co-authored-by: Rosa Trieu <107086888+rtrieu@users.noreply.github.com>

Author: 3 people