Add navigation root term from plone.restapi to main documentation glossary

Author: stevepiercy

docs/glossary.md

@@ -583,7 +583,7 @@ Verb
     One of the basic actions that can be requested to be executed by the server (on an object) based on the {term}`Request`.
 
 Object URL
-    The target object of the {term}`Request`
+    The target object of the {term}`Request`.
 
 Authorization Header
     Part of the {term}`Request` that is responsible for the authentication related to the right user or service to ask for a {term}`Response`.
@@ -604,6 +604,9 @@ trigger
     A trigger is an event in Plone that causes the execution of defined actions.
     Example triggers include object modified, user logged in, and workflow state changed.
 
+navigation root
+    An object marked as a navigation root provides a way to root catalog queries, searches, breadcrumbs, and so on, into that object.
+
 FTI
 Factory Type Information
     Factory type information (FTI) is responsible for content creation in the portal.