Add supported platform (#743)

Author: jmagak

artifacts/attributes.adoc

@@ -94,6 +94,9 @@
 :installing-on-ocp-book-url: https://docs.redhat.com/en/documentation/red_hat_developer_hub/{product-version}/html-single/installing_red_hat_developer_hub_on_openshift_container_platform/index
 :installing-on-ocp-book-title: Installing {product} on {ocp-short}
 
+:installing-on-gke-book-url: https://docs.redhat.com/en/documentation/red_hat_developer_hub/{product-version}/html-single/installing_red_hat_developer_hub_on_google_kubernetes_engine/index
+:installing-on-gke-book-title: Installing {product} on {gke-brand-name}
+
 :installing-on-eks-book-url: https://docs.redhat.com/en/documentation/red_hat_developer_hub/{product-version}/html-single/installing_red_hat_developer_hub_on_amazon_elastic_kubernetes_service/index
 :installing-on-eks-book-title: Installing {product} on {eks-brand-name}
 

modules/about/ref-supported-platforms.adoc

@@ -1,7 +1,7 @@
 :_newdoc-version: 2.18.3
 :_template-generated: 2024-11-08
 
-:_mod-docs-content-type: CONCEPT
+:_mod-docs-content-type: REFERENCE
 
 [id="supported-platforms_{context}"]
 = Supported platforms
@@ -12,3 +12,4 @@
 * link:{installing-on-eks-book-url}[{eks-brand-name}]
 * link:{installing-on-aks-book-url}[{aks-brand-name}]
 * link:{installing-on-osd-on-gcp-book-url}[{gcp-brand-name}]
+* link:{installing-on-gke-book-url}[{gke-brand-name}]