Updated API from documentation release

Author: ct-sdks[bot]

api-specs/api/types/subscription/ChangeSubscriptionResourceTypeId.raml

@@ -58,7 +58,7 @@ enum:
   business-unit: |
     Changes to [BusinessUnits](ctp:api:type:BusinessUnit). Only available for [B2B](/../offering/composable-commerce#composable-commerce-for-b2b)-enabled Projects.
   cart: |
-    Changes to [Carts](ctp:api:type:Cart).
+    Changes to [Carts](ctp:api:type:Cart). Only notification of creation is supported.
   cart-discount: |
     Changes to [CartDiscounts](ctp:api:type:CartDiscount).
   category: |