Update how-to-cert-manager-lets-encrypt-gateway-api.md

Author: JackStromberg

articles/application-gateway/for-containers/how-to-cert-manager-lets-encrypt-gateway-api.md

@@ -5,7 +5,7 @@ services: application-gateway
 author: greg-lindsay
 ms.service: azure-appgw-for-containers
 ms.topic: how-to
-ms.date: 3/7/2025
+ms.date: 3/21/2025
 ms.author: greglin
 ---
 
@@ -15,7 +15,7 @@ This guide demonstrates how to use cert-manager to automatically issue and renew
 
 For the purposes of this example, we have cert-manager configure certificates issued from Let's Encrypt to demonstrate an end-to-end deployment, where Application Gateway for Containers is providing TLS offloading.
 
-![A figure showing cert-manager retrieving a certificate from Let's Encrypt and storing it into Kubernetes' secret store for TLS with Application Gateway for Containers.](./media/how-to-cert-manager-lets-encrypt-gateway-api/how-to-cert-manager-lets-encrypt-gateway-api.svg)
+[![A diagram showing cert-manager retrieving a certificate from Let's Encrypt and storing it into Kubernetes' secret store for TLS with Application Gateway for Containers.](./media/how-to-cert-manager-lets-encrypt-gateway-api/how-to-cert-manager-lets-encrypt-gateway-api.svg) ](./media/how-to-cert-manager-lets-encrypt-gateway-api/how-to-cert-manager-lets-encrypt-gateway-api.svg#lightbox)
 
 For certificates to be issued by Let's Encrypt, a challenge is required by the authority to validate domain ownership. This validation happens by allowing cert-manager to create a pod and HTTPRoute resource that exposes an endpoint during certificate issuance, proving your ownership of the domain name.