Update to point to correct example repo

Updated to point to correct example repo https://github.com/Azure/arc-k8s-demo

Author: dstrebel

articles/azure-arc/kubernetes/use-gitops-connected-cluster.md

@@ -27,7 +27,7 @@ This getting started guide will walk you through applying a set of configuration
 
 ## Create a configuration
 
-- Example repository: <https://github.com/slack/cluster-config>
+- Example repository: <https://github.com/Azure/arc-k8s-demo>
 
 The example repository is structured around the persona of a cluster operator who would like to provision a few namespaces, deploy a common workload, and provide some team-specific configuration. Using this repository creates the following resources on your cluster: