docs(spec): regenerate the export reference page after the served-format wording fix

Co-authored-by: Claude <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Rjy9MeetSfq34PKn81CRiN

Author: claude

content/docs/references/api/export.mdx

@@ -14,8 +14,8 @@ Industry alignment: Salesforce Data Export, Airtable CSV Export,
 Dynamics 365 Data Management.
 
 The export the platform serves is the synchronous streaming door
-`GET /api/v1/data/:object/export`, which answers the file itself in one of
-the `ExportFormat` formats. The asynchronous export-job API that used to be
+`GET /api/v1/data/:object/export`, which answers the file itself as CSV,
+JSON or XLSX. The asynchronous export-job API that used to be
 declared here (export jobs, their progress / download / list shapes,
 scheduled exports and `ExportApiContracts`) was never served by any route and
 was removed in @objectstack/spec 17 (ADR-0049 enforce-or-remove); a recurring