Update join-windows-nodes-to-cluster.md

Author: paigehargrave

ee/ucp/admin/configure/join-nodes/join-windows-nodes-to-cluster.md

@@ -16,6 +16,8 @@ Follow these steps to enable a worker node on Windows.
 2.  Configure the Windows node.
 3.  Join the Windows node to the cluster.
 
+**Note**: Refer to the [Docker compatibility matrix](https://success.docker.com/article/compatibility-matrix) for complete Docker compatibility information with Windows Server. 
+
 ## Install Docker Engine - Enterprise on Windows Server 
 
 [Install Docker Engine - Enterprise](/engine/installation/windows/docker-ee/#use-a-script-to-install-docker-ee)