message: Added example to specification
diff: @@ -121,10 +121,10 @@ types, in port arguments, in telemetry channels, and in event arguments.
  As an example, you can create a file `SwitchStateEnumAi.xml` that specifies an
  XML enumeration type `SwitchState`
  -with enumerated constants `OFF` and `ON`, like this:
  +with enumerated constants `OFF` and `ON` and set to `OFF` by default, like this:
  ```xml
  -<enum name="SwitchState">
  +<enum name="SwitchState" default="OFF">
  <item name="OFF" value="0"/>
  <item name="ON" value="1"/>
  </enum>
  