link to other terms (#6625)

_data/glossary/horizontal-pod-autoscaler.yaml

@@ -5,11 +5,13 @@ aka:
 - HPA
 related:
 - pod
+- replication-controller
+- deployment
 tags:
 - operation
 short-description: >
   An API resource that automatically scales the number of pod replicas based on targeted CPU
   utilization or custom metric targets.
 long-description: >
-  HPA is typically used with replication controllers, deployments or replica sets and cannot be
-  applied to objects that cannot be scaled, for example DaemonSets.  
+  HPA is typically used with {% glossary_tooltip text="Replication Controllers" term_id="replication-controller" %}, {% glossary_tooltip text="Deployments" term_id="deployment" %}, or Replica Sets.
+  It cannot be applied to objects that cannot be scaled, for example {% glossary_tooltip text="DaemonSets" term_id="daemonset" %}.