Update xml/System/AppDomain.xml

Author: gewarren

xml/System/AppDomain.xml

@@ -5804,7 +5804,7 @@ This method overload uses the <xref:System.AppDomainSetup> information from the
 
 ## Remarks
 
-The friendly name of the default application domain is the file name of the process executable. For example, if the executable used to start the process is `"c:\MyAppDirectory\MyAssembly.exe"`, the friendly name of the default application domain is `"MyAssembly.exe"`. (In .NET (Core) versions, the friendly name doesn't include the file extension.)
+The friendly name of the default application domain is the file name of the process executable. For example, if the executable used to start the process is `"c:\MyAppDirectory\MyAssembly.exe"`, the friendly name of the default application domain is `"MyAssembly.exe"`. (In .NET Core and .NET 5+, the friendly name doesn't include the file extension.)
 
 ## Examples
  The following code example uses the <xref:System.AppDomain.FriendlyName%2A> property to get the friendly name of the current application domain. For the default application domain, the friendly name is the name of the application's executable file. The code example also displays additional information about the application domain.