Add for older kyverno version

Author: Denish3436

content/en/docs/writing-policies/mutate.md

@@ -1187,15 +1187,41 @@ spec:
       mutate:
         foreach:
           - list: request.object.spec.tls[]
-            as: element0
+            as: element0  # Outer loop element (tls array)
             foreach:
               - list: "element.hosts"
-                as: element1
+                as: element1  # Inner loop element (hosts array)
                 patchesJson6902: |-
                   - path: /spec/tls/{{elementIndex0}}/hosts/{{elementIndex1}}
                     op: replace
                     value: "{{ replace_all('{{element1}}', '.old.com', '.new.com') }}"
 ```
+For older Kyverno versions that do not support as:, elements can be accessed directly using {{element0}} and {{element1}}.
+
+```yaml
+apiVersion: kyverno.io/v1
+kind: ClusterPolicy
+metadata:
+  name: replace-dns-suffix-legacy
+spec:
+  background: false
+  rules:
+    - name: replace-dns-suffix
+      match:
+        any:
+          - resources:
+              kinds:
+                - Ingress
+      mutate:
+        foreach:
+          - list: request.object.spec.tls[]
+            foreach:
+              - list: element.hosts
+                patchesJson6902: |-
+                  - path: /spec/tls/{{elementIndex0}}/hosts/{{elementIndex1}}
+                    op: replace
+                    value: "{{ replace_all('{{element}}', '.old.com', '.new.com') }}"
+```                    
 
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