specified difference between #3 and #4 examples

Author: malindesilva

docset/winserver2012-ps/activedirectory/Get-ADDomainController.md

@@ -86,7 +86,7 @@ Description
 
 -----------
 
-Get a global catalog in the current forest using Discovery.
+Get a global catalog in the current forest using Discovery. Domain type name is used in this scenario.
 
 ### -------------------------- EXAMPLE 4 --------------------------
 ```
@@ -97,7 +97,7 @@ Description
 
 -----------
 
-Get a global catalog in the current forest using Discovery.
+Get a global catalog in the current forest using Discovery. Domain type id is used in this scenario. Possible values are 1 = PrimaryDC, 2 = GlobalCatalog, 3 = KDC, 4 = TimeService , 5 = ReliableTimeService or 6 = ADWS. 
 
 ### -------------------------- EXAMPLE 5 --------------------------
 ```