docs(core): update markdown docs for recent model ref changes

ref: #465 #467

docs/projects/centurion_erp/user/core/markdown.md

@@ -29,6 +29,8 @@ All Text fields, that is those that are multi-lined support markdown text.
 
 - Ticket References
 
+- Model References
+
 
 ## Admonitions
 
@@ -76,10 +78,14 @@ A Model link is a reference to an item within the database. Supported model link
 
 - kb
 
+- operating_system
+
+- organization
+
 - service
 
 - software
 
-- operating system
+- team
 
 To declare a model link use syntax `$<type>-<model id>`. i.e. for device 1, it would be `$device-1`