Update env-sample

Author: Chris Wiechmann

env-sample

@@ -204,8 +204,9 @@ API_MANAGER_PASSWORD=changeme
 # Option to disable custom properties. With that, custom properties are no longer looked up
 # at the API-Manager neither indexed in Elasticsearch. If set, it is of course no longer
 # possible to use these for example for a customized authorization.
+# Defaults to false
 # Used-By: API-Builder
-# DISABLE_CUSTOM_PROPERTIES=false
+# DISABLE_CUSTOM_PROPERTIES=true
 
 # ----------------------------------------------------------------------------------------------
 # Recommended to configure to see Filebeat statistics in the Elastic Stack monitoring.