fix: remove duplicated Helm next-steps doc link (#17429)

Author: immanuwell

content/en/docs/setup/install/helm/index.md

@@ -95,7 +95,6 @@ You can display the default values of configuration parameters using the `helm s
         * https://istio.io/latest/docs/tasks/traffic-management
         * https://istio.io/latest/docs/tasks/security/
         * https://istio.io/latest/docs/tasks/policy-enforcement/
-        * https://istio.io/latest/docs/tasks/policy-enforcement/
       * Review the list of actively supported releases, CVE publications and our hardening guide:
         * https://istio.io/latest/docs/releases/supported-releases/
         * https://istio.io/latest/news/security/

content/en/docs/setup/install/helm/snips.sh

@@ -72,7 +72,6 @@ Next steps:
     * https://istio.io/latest/docs/tasks/traffic-management
     * https://istio.io/latest/docs/tasks/security/
     * https://istio.io/latest/docs/tasks/policy-enforcement/
-    * https://istio.io/latest/docs/tasks/policy-enforcement/
   * Review the list of actively supported releases, CVE publications and our hardening guide:
     * https://istio.io/latest/docs/releases/supported-releases/
     * https://istio.io/latest/news/security/

content/es/docs/setup/install/helm/index.md

@@ -94,7 +94,6 @@ Puedes mostrar los valores por defecto de los parámetros de configuración usan
         * https://istio.io/latest/docs/tasks/traffic-management
         * https://istio.io/latest/docs/tasks/security/
         * https://istio.io/latest/docs/tasks/policy-enforcement/
-        * https://istio.io/latest/docs/tasks/policy-enforcement/
       * Revisa la lista de releases soportados, publicaciones de CVE y nuestra guía de fortalecimiento:
         * https://istio.io/latest/docs/releases/supported-releases/
         * https://istio.io/latest/news/security/

content/uk/docs/setup/install/helm/index.md

@@ -94,7 +94,6 @@ $ helm install <release> <chart> --namespace <namespace> --create-namespace [--s
         * https://istio.io/latest/docs/tasks/traffic-management
         * https://istio.io/latest/docs/tasks/security/
         * https://istio.io/latest/docs/tasks/policy-enforcement/
-        * https://istio.io/latest/docs/tasks/policy-enforcement/
       * Review the list of actively supported releases, CVE publications and our hardening guide:
         * https://istio.io/latest/docs/releases/supported-releases/
         * https://istio.io/latest/news/security/

content/zh/docs/setup/install/helm/index.md

@@ -100,7 +100,6 @@ $ helm install <release> <chart> --namespace <namespace> --create-namespace [--s
         * https://istio.io/latest/docs/tasks/traffic-management
         * https://istio.io/latest/docs/tasks/security/
         * https://istio.io/latest/docs/tasks/policy-enforcement/
-        * https://istio.io/latest/docs/tasks/policy-enforcement/
       * Review the list of actively supported releases, CVE publications and our hardening guide:
         * https://istio.io/latest/docs/releases/supported-releases/
         * https://istio.io/latest/news/security/