Fix broken indent (#13886)

* fix indent

* fix broken indent

content/en/docs/tasks/configure-pod-container/share-process-namespace.md

@@ -43,11 +43,13 @@ Process Namespace Sharing is enabled using the `ShareProcessNamespace` field of
 
 1. Create the pod `nginx` on your cluster:
 
+    ```shell
     kubectl apply -f https://k8s.io/examples/pods/share-process-namespace.yaml
+    ```
 
 1. Attach to the `shell` container and run `ps`:
 
-        ```
+    ```shell
     kubectl attach -it nginx -c shell
     ```
 
@@ -66,6 +68,7 @@ Process Namespace Sharing is enabled using the `ShareProcessNamespace` field of
 You can signal processes in other containers. For example, send `SIGHUP` to
 nginx to restart the worker process. This requires the `SYS_PTRACE` capability.
 
+```
 / # kill -HUP 8
 / # ps ax
 PID   USER     TIME  COMMAND
@@ -74,10 +77,12 @@ nginx to restart the worker process. This requires the `SYS_PTRACE` capability.
    15 root      0:00 sh
    22 101       0:00 nginx: worker process
    23 root      0:00 ps ax
+```
 
 It's even possible to access another container image using the
 `/proc/$pid/root` link.
 
+```
 / # head /proc/8/root/etc/nginx/nginx.conf
 
 user  nginx;
@@ -89,6 +94,7 @@ It's even possible to access another container image using the
 
 events {
     worker_connections  1024;
+```
 
 {{% /capture %}}