fix release description (#10788)

Author: lgadban

.github/workflows/release.yaml

@@ -23,6 +23,7 @@ on:
 env:
   # this is uses the `github.repository_owner` to support releases from forks (useful for testing).
   IMAGE_REGISTRY: ghcr.io/${{ github.repository_owner }}
+  VANITY_REGISTRY: cr.kgateway.dev/kgateway-dev
 
 permissions:
   contents: write

.goreleaser.yaml

@@ -162,16 +162,22 @@ release:
 
     ### Helm Charts
 
-    The Helm chart is available at {{ .Env.IMAGE_REGISTRY }}/charts/kgateway.
+    The Helm chart is available at {{ .Env.VANITY_REGISTRY }}/charts/kgateway.
 
     ### Docker Images
 
     The docker images are available at:
 
-    - cr.kgateway.dev/kgateway-dev/{{ .Env.CONTROLLER_IMAGE_REPO }}:{{ .Env.VERSION }}
-    - cr.kgateway.dev/kgateway-dev/{{ .Env.SDS_IMAGE_REPO }}:{{ .Env.VERSION }}
-    - cr.kgateway.dev/kgateway-dev/{{ .Env.ENVOYINIT_IMAGE_REPO }}:{{ .Env.VERSION }}
+    - {{ .Env.VANITY_REGISTRY }}/{{ .Env.CONTROLLER_IMAGE_REPO }}:{{ .Env.VERSION }}
+    - {{ .Env.VANITY_REGISTRY }}/{{ .Env.SDS_IMAGE_REPO }}:{{ .Env.VERSION }}
+    - {{ .Env.VANITY_REGISTRY }}/{{ .Env.ENVOYINIT_IMAGE_REPO }}:{{ .Env.VERSION }}
 
     ## Quickstart
 
+    Try installing this release:
+    ```
+    helm install --create-namespace --namespace kgateway-system kgateway \
+      oci://{{ .Env.VANITY_REGISTRY }}/charts/kgateway --version {{ .Env.VERSION }}
+    ```
+
     For detailed installation instructions and next steps, please visit our [quickstart guide](https://kgateway.dev/docs/quickstart/).