Update property_namespace.md
add reference to default profiles
| `high_availabity` | true/false | true | |
| `dscp_value` | integer | 0 | |
-The properties will be expanded to concrete values using corresponding profiles.
+The properties will be expanded to concrete values using corresponding profiles (see [current defaults](https://github.com/NEAT-project/neat/tree/master/policy/examples/pib)).
## NEAT Property namespace
