Updated usage of "docker"

Author: rogue-gamer-ryt

content/en/docs/concepts/workloads/pods/_index.md

@@ -39,12 +39,10 @@ runtime, and it helps to describe Pods using some terminology from Docker.
 {{< /note >}}
 
 The shared context of a Pod is a set of Linux namespaces, cgroups, and
-potentially other facets of isolation - the same things that isolate a Docker
-container.  Within a Pod's context, the individual applications may have
+potentially other facets of isolation - the same things that isolate a {{< glossary_tooltip text="containers" term_id="container" >}}. Within a Pod's context, the individual applications may have
 further sub-isolations applied.
 
-In terms of Docker concepts, a Pod is similar to a group of Docker containers
-with shared namespaces and shared filesystem volumes.
+A Pod is similar to a set of containers with shared namespaces and shared filesystem volumes.
 
 ## Using Pods