remove trailing whitespace again

Author: erikdw

kube-goat/README.md

@@ -3,7 +3,7 @@
 
 Your turn to hack a cluster. You have come across a kubeconfig file on a public Github repo. What can you do?
 
-## The instructor will provide a link to the kubeconfig file for you to download. 
+## The instructor will provide a link to the kubeconfig file for you to download.
 
 In Google Cloud Shell, we will use the kubeconfig for the kube-goat cluster. Copy the kubeconfig and paste it in Cloud Shell at `~/.kube/goat-config` (You will need to create the `.kube` directory).