chore: update control openapi spec

[knock-eng-bot]

Automated PR created from GitHub Actions workflow from knocklabs/control release (v0.1.1273).

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Project	Deployment	Actions	Updated (UTC)
docs	Ready	Preview, Comment	Mar 18, 2026 1:46pm

[cursor]

Risk MEDIUM: Automated OpenAPI spec update adding MJML support fields (is_mjml boolean) and updating descriptions across three schema components in the Management API spec.

Reasons

• Modifies an OpenAPI spec file (data/specs/mapi/openapi.yml), which can affect API reference rendering on the docs site
• Adds new is_mjml property to three schema components (EmailLayoutUpsertProperties, EmailTemplateContentUpsert, and an email layout response schema)
• Updates existing html_layout and html_body descriptions to reference MJML format
• Small, focused diff (20 additions, 3 deletions) from a trusted bot (knock-eng-bot)
• Automated PR from knocklabs/control release (v0.1.1273), following a known pattern of spec sync updates

Notes

• Verify that the new is_mjml fields render correctly on the API reference pages
• Confirm that the updated descriptions for html_layout and html_body display properly with the added MJML references
• This is a routine automated spec update, but a quick visual check of the affected API reference sections is recommended before merging

  

_{Sent by Cursor Automation: Docs PR classifier}