chore(docs): Generated References (#8979)

Generated the following references:
- `core_flows`
- `fulfillment`
- `modules`
- `order`
- `promotion`
- `types`

www/apps/resources/generated/sidebar.mjs

@@ -12121,6 +12121,14 @@ export const generatedSidebar = [
                     "path": "/references/medusa-workflows/steps/refundPaymentStep",
                     "title": "refundPaymentStep",
                     "children": []
+                  },
+                  {
+                    "loaded": true,
+                    "isPathHref": true,
+                    "type": "link",
+                    "path": "/references/medusa-workflows/validateRefundStep",
+                    "title": "validateRefundStep",
+                    "children": []
                   }
                 ],
                 "loaded": true