fix: change apl to application platform (#845)

* fix: change apl to application platform

* fix: change to App Platform

---------

Co-authored-by: svcAPLBot <174728082+svcAPLBot@users.noreply.github.com>

Author: ElderMatt

src/openapi/cluster.yaml

@@ -10,7 +10,7 @@ Cluster:
     teamMember:
       - read-any
   title: Cluster
-  description: The Kubernetes cluster running APL.
+  description: The Kubernetes cluster running App Platform.
   properties:
     name:
       title: Name