chore: update OpenAPI spec from monorepo (#475)

Co-authored-by: OpenRouter SDK Bot <sdk-bot@openrouter.ai>

Author: openrouter-docs-sync[bot]

.speakeasy/in.openapi.yaml

@@ -24475,7 +24475,7 @@ paths:
                         - 'desc'
                       type: 'string'
                     field:
-                      description: 'Field to order by'
+                      description: 'Field to order by: a metric included in `metrics` (or "request_count", which may be ordered by without being requested), a requested dimension, or "date".'
                       example: 'request_count'
                       type: 'string'
                   required: