[Logs] Update Logpush Transformers documentation

[Sahidya]

Summary

• Updates Logpush Transformers from closed beta to beta.
• Increases the documented SQL query size limit from 10 KB to 250 KB.
• Adds a curl example that creates a transformer for the dns_logs dataset.

Screenshots

Not applicable. This PR updates documentation content only.

Documentation checklist

• The change adheres to the documentation style guide.

[cloudflare-docs-bot]

AI Review

✅ Reviewed b668f13 · 0 findings · incremental

Resolved (1) · Dismissed (0)

• Resolved: Use <APIRequest> instead of a raw curl example · Verified at head (transformers.mdx): the raw curl bash fence is removed; the file imports APIRequest from ~/components and now documents POST /accounts/{account_id}/logpush/transformers via <APIRequest>, satisfying the components/api-request rule.

Commands

• /review Run a review now.
• /full-review Review the entire PR diff.
• /disable-auto-review Stop automatic reviews.
• /rebase Rebase against production.

[Sahidya]

/review

[Sahidya]

CV-c6d62e414943 is already resolved. The current PR description includes a human-written summary of all three documentation changes, explains that screenshots are not applicable, and completes the relevant documentation checklist item. The remaining warning appears to be stale because the latest conventions review reported that it could not complete.

[Sahidya]

/full-review