Fix typo in federation document

Author: nashasha1

docs/tasks/federation/set-up-cluster-federation-kubefed.md

@@ -386,7 +386,7 @@ To join clusters into the federation:
 
 1. If you are using a managed cluster service, allow the service to access the cluster. To do this, create a `clusterrolebinding` for the account associated with your cluster service:
 
-       kubectl create clusterrolebinding <your_user>-cluster-admin-binding --clusterrole=cluster-admin --user=<your_user>@example.org --context=<joining_cluster_context
+       kubectl create clusterrolebinding <your_user>-cluster-admin-binding --clusterrole=cluster-admin --user=<your_user>@example.org --context=<joining_cluster_context>
 
 1. Join the cluster to the federation, using `kubefed join`, and make sure you provide the following: