TINYDOC-3514 - Narrow the tiny.cloud link-check exclusion to the documentation path v7

[kemister85]

Ticket: TINYDOC-3514

Site: Staging (CI-only change; no page content differs)

Follow-up to #4277. .lychee.toml excluded the whole tiny.cloud domain, so a pull request whose only changed link is on that domain passed having checked nothing — the job reported "0 of the PR's link(s) render as anchors" and went green. Reproduced on #4332: a link to a hard 404 under /pricing/ passed before this change, and fails with it (run).

The exclusion was written for documentation pages a pull request adds before they are published. That covers tiny.cloud/docs, not the marketing and product pages, where a 404 is real link rot.

Changes:

• .lychee.toml: replaced '^https?://([a-z0-9-]+\.)*tiny\.cloud' with three scoped rules — /docs self-links, the TinyMCE AI API base URL (404s on its root by design), and claims.tiny.cloud (JWT claim names, not links).
• .lycheeignore: added https://support.tiny.cloud/ (403 to automated checkers, reachable in a browser), previously covered by the domain-wide pattern.

Note: each branch was built and every tiny.cloud anchor the change newly exposes was probed — 66 on /8, 60 on /7, 48 on /6, 83 on /5, none unhealthy. Applied identically to #4333 (/latest), #4334 (v7), #4335 (v6), #4336 (v5).

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Pre-checks:

• Branch is correctly prefixed: hotfix/7/TINYDOC-3514-narrow-exclusion
• Build passes without console errors, warnings, or issues.

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Review:

• Documentation Team Lead has reviewed.