docs-util: fixes to OAS generator + generate OAS (#10867)

www/apps/api-reference/specs/admin/components/schemas/AdminOrder.yaml

@@ -5,6 +5,7 @@ required:
   - payment_collections
   - items
   - shipping_methods
+  - status
   - currency_code
   - id
   - version
@@ -235,3 +236,7 @@ properties:
     type: number
     title: original_shipping_tax_total
     description: The tax total of the order's shipping excluding promotions.
+  status:
+    type: string
+    title: status
+    description: The order's status.