Add glossary entry for probe (#40131)

* Add glossary entry for probe #39608

* Suggested changes done to probe.md - added id, date changed/updated, full link added, etc

* suggest changes done, tag added

* re-worded the short_description and description for probe to avoid misunderstanding with word diagnostic

* back with diagnostic

* suggest changes done

* suggested changes done

Author: KhushPatibandha

content/en/docs/reference/glossary/probe.md

@@ -0,0 +1,18 @@
+---
+title: Probe
+id: probe
+date: 2023-03-21
+full_link: /docs/concepts/workloads/pods/pod-lifecycle/#container-probes
+
+short_description: >
+  A check performed periodically by the kubelet on a container in a Pod.
+
+tags:
+- tool
+---
+A check that the kubelet periodically performs against a container that is 
+running in a pod, that will define container's state and health and informing container's lifecycle.
+
+<!--more-->
+ 
+To learn more, read [container probes](/docs/concepts/workloads/pods/pod-lifecycle/#container-probes).