use admin_email setting of wordpress helm chart

flux2/apps/wordpress/wordpress-values-configmap.yaml

@@ -13,6 +13,7 @@ data:
         adm:
           usid: admin
           pssw: "${wordpress_admin_password}"
+          email: "${admin_email}"
       site:
         # NOTE: Make sure you use underscore and that the localisation is in full caps
         locale: en_US