update package, fix issue 3135 (#3136)

Author: vaikas

docs/serving/samples/cloudevents/cloudevents-nodejs/README.md

@@ -70,9 +70,9 @@ To deploy the Knative service, edit the `service.yaml` file and replace
 
 To deploy using the `kn` CLI:
 
-```shell
-kn service create cloudevents-nodejs --image=<image>
-```
+   ```shell
+   kn service create cloudevents-nodejs --image=<image>
+   ```
 
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