docs: improve SSL certificate troubleshooting guidance

[fahe1em1]

Summary

This improves the SSL/TLS troubleshooting path by making the common certificate errors searchable and actionable. It adds exact error strings to the FAQ, a dedicated troubleshooting section with curl and openssl diagnosis steps plus a caBundlePath example, and a cross-link from the self-hosting guide. It also softens the Windows guidance so win-ca is not presented as the only fix and points readers back to caBundlePath as the reliable option.

Testing

• npx --yes prettier --check docs/faqs.mdx docs/troubleshooting.mdx docs/guides/how-to-self-host-a-model.mdx
• npx mintlify broken-links

Why this is small and safe

This is a docs-only change scoped to three existing pages. It does not change runtime behavior or config parsing, but it should make a recurring support issue much easier to diagnose and fix.

Fixes #9175

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Summary by cubic

Improves SSL/TLS troubleshooting docs with exact error strings, step-by-step curl/openssl diagnosis, and a clear requestOptions.caBundlePath example, plus a cross-link from self-hosting. Updates Windows guidance to note win-ca as optional and point to caBundlePath as the reliable fix. Fixes #9175.

^{Written for commit 0c3792e. Summary will update on new commits.}

[github-actions]

All contributors have signed the CLA ✍️ ✅
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[fahe1em1]

I have read the CLA Document and I hereby sign the CLA

[cubic-dev-ai]

No issues found across 3 files

[RomneyDa]

@fahe1em1 thanks for the contribution, this is great