Update Service credential binding rotation prerequisites section

Author: jochenehret

services/application-binding.html.md.erb

@@ -288,7 +288,7 @@ To update your service credentials without experiencing app downtime you can eit
 The service credential binding rotation feature allows you to rotate credentials for a service instance without unbinding and rebinding the service instance. This feature requires the following prerequisites:
 
 - The Cloud Foundry platform must support at least 2 bindings per service instance. This is configured by the platform operator with the `cc.max_service_credential_bindings_per_app_service_instance` property in the Cloud Controller configuration.
-- The service broker must support multiple bindings for the service offering.
+- The service broker must support multiple bindings per service instance and application.
 - You must use at least CF CLI v8.18.0.
 
 To rotate credentials for an already bound service instance with no downtime: