trim whitespaces in manifests

content/en/docs/concepts/policy/pod-security-policy.md

@@ -222,6 +222,11 @@ spec:
     - name: pause
       image: k8s.gcr.io/pause
 EOF
+```
+
+The output is similar to this:
+
+```
 Error from server (Forbidden): error when creating "STDIN": pods "pause" is forbidden: unable to validate against any pod security policy: []
 ```
 
@@ -270,6 +275,11 @@ spec:
     - name: pause
       image: k8s.gcr.io/pause
 EOF
+```
+
+The output is similar to this
+
+```
 pod "pause" created
 ```
 
@@ -289,6 +299,11 @@ spec:
       securityContext:
         privileged: true
 EOF
+```
+
+The output is similar to this:
+
+```
 Error from server (Forbidden): error when creating "STDIN": pods "privileged" is forbidden: unable to validate against any pod security policy: [spec.containers[0].securityContext.privileged: Invalid value: true: Privileged containers are not allowed]
 ```