feat: Update banner link for 2.0 IA changes

Author: ADubhlaoich

_banners/ngf-2.0-release.md

@@ -1,6 +1,6 @@
 {{< banner "notice" "NGINX Gateway Fabric 2.0 is now available" >}}
 
-NGINX Gateway Fabric 2.0 has released! Follow [this guide]({{< ref "/ngf/upgrading-ngf.md" >}}) to upgrade from 1.x to 2.0.
+NGINX Gateway Fabric 2.0 has released! Follow [this guide]({{< ref "/ngf/install/upgrade-2.0" >}}) to upgrade from 1.x to 2.0.
 
 For 1.x, checkout [an older version](https://github.com/nginx/documentation/commit/0be97114d93be0f44acff8711f31bf0b6448dd94) of documentation.