improve configure-projected-volume-storage.md (kubernetes#8434)

modified:   content/en/docs/tasks/configure-pod-container/configure-projected-volume-storage.md

content/en/docs/tasks/configure-pod-container/configure-projected-volume-storage.md

@@ -24,36 +24,37 @@ Here is the configuration file for the Pod:
 {{< code file="projected-volume.yaml" >}}
 
 1. Create the Secrets:
-
-       # Create files containing the username and password:
+```shell
+    # Create files containing the username and password:
        echo -n "admin" > ./username.txt
        echo -n "1f2d1e2e67df" > ./password.txt
 
-       # Package these files into secrets:
+    # Package these files into secrets:
        kubectl create secret generic user --from-file=./username.txt
        kubectl create secret generic pass --from-file=./password.txt
-
+```
 1. Create the Pod:
-
+```shell
        kubectl create -f https://k8s.io/docs/tasks/configure-pod-container/projected-volume.yaml
-
+```
 1. Verify that the Pod's Container is running, and then watch for changes to
 the Pod:
-
+```shell
        kubectl get --watch pod test-projected-volume
-
+```
     The output looks like this:
 
        NAME                    READY     STATUS    RESTARTS   AGE
        test-projected-volume   1/1       Running   0          14s
 
 1. In another terminal, get a shell to the running Container:
-
+```shell
        kubectl exec -it test-projected-volume -- /bin/sh
-
+```
 1. In your shell, verify that the `projected-volume` directory contains your projected sources:
-
-       / # ls /projected-volume/
+```shell
+       ls /projected-volume/
+```
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