Replace kubectl.sh with kubectl in the liveness example.

examples/liveness/README.md

@@ -37,7 +37,7 @@ This [guide](https://github.com/GoogleCloudPlatform/kubernetes/blob/master/examp
 To show the health check is actually working, first create the pods:
 ```
 # kubectl create -f exec-liveness.yaml
-# cluster/kbuectl.sh create -f http-liveness.yaml
+# kubectl create -f http-liveness.yaml
 ```
 
 Check the status of the pods once they are created: