Added shell script examples

Fixed nits, broken links and numbering

Co-authored-by: Tim Bannister <tim@scalefactory.com>
Co-authored-by: Shannon Kularathna <ax3shannonkularathna@gmail.com>
Co-authored-by: Jim Angel <jimangel@users.noreply.github.com>

content/en/examples/security/kind-with-namespace-level-baseline-pod-security.sh

@@ -0,0 +1,28 @@
+#!/bin/sh
+# Until v1.23 is released, kind node image needs to be built from k/k master branch
+# Ref: https://kind.sigs.k8s.io/docs/user/quick-start/#building-images
+kind create cluster --name psa-ns-level --image kindest/node:v1.23.0
+kubectl cluster-info --context kind-psa-ns-level
+# Wait for 15 seconds (arbitrary) ServiceAccount Admission Controller to be available
+sleep 15
+kubectl create ns example
+kubectl label --overwrite ns example \
+  pod-security.kubernetes.io/enforce=baseline \
+  pod-security.kubernetes.io/enforce-version=latest \
+  pod-security.kubernetes.io/warn=restricted \
+  pod-security.kubernetes.io/warn-version=latest \
+  pod-security.kubernetes.io/audit=restricted \
+  pod-security.kubernetes.io/audit-version=latest
+cat <<EOF > /tmp/pss/nginx-pod.yaml
+apiVersion: v1
+kind: Pod
+metadata:
+  name: nginx
+spec:
+  containers:
+    - image: nginx
+      name: nginx
+      ports:
+        - containerPort: 80
+EOF
+kubectl apply -n example -f /tmp/pss/nginx-pod.yaml