docs: fix broken links in OAS (#14000)

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

@@ -28,7 +28,7 @@ properties:
       handling its processing.
     externalDocs:
       url: >-
-        https://docs.medusajs.com/v2/resources/commerce-modules/fulfillment/shipping-option#data-property
+        https://docs.medusajs.com/resources/commerce-modules/fulfillment/shipping-option#data-property
   price_type:
     type: string
     description: >-