Update pipeline/outputs/datadog.md

Co-authored-by: Craig Norris <[email protected]>
Signed-off-by: Jesse Szwedko <[email protected]>

Author: jszwedko

pipeline/outputs/datadog.md

@@ -24,8 +24,8 @@ Before you begin, you need a [Datadog account](https://app.datadoghq.com/signup)
 | dd_service      | _Recommended_ - The human readable name for your service generating the logs (e.g. the name of your application or database). If unset, Datadog will look for the service using [Service Remapper](https://docs.datadoghq.com/logs/log_configuration/pipelines/?tab=service#service-attribute)." |                                  |
 | dd_source       | _Recommended_ - A human readable name for the underlying technology of your service (e.g. `postgres` or `nginx`). If unset, Datadog will look for the source in the [`ddsource` attribute](https://docs.datadoghq.com/logs/log_configuration/pipelines/?tab=source#source-attribute).                                                                                                                                                                                                                                                                                                                   |                                  |
 | dd_tags         | _Optional_ - The [tags](https://docs.datadoghq.com/tagging/) you want to assign to your logs in Datadog. If unset, Datadog will look for the tags in the [`ddtags' attribute](https://docs.datadoghq.com/api/latest/logs/#send-logs).                                                                                                                                                                                                                                                                                                                                   |                                  |
-| dd_message_key  | By default, the plugin searches for the key 'log' and remap the value to the key 'message'. If the property is set, the plugin will search the property name key.                                                                                                                                                                                                                                                                                                                                                                                                       |                                  |
-| dd_hostname     | The host that emitted logs should be associated with. If unset, Datadog will expect the host to be set as `host`, `hostname`, or `syslog.hostname` attributes. See Datadog Logs preprocessor documentation for up-to-date recognized attributes.                                                                                                                                                                                                                                                                                                                       |                                  |
+| dd_message_key  | By default, the plugin searches for the key `log` and remaps the value to the key `message`. If the property is set, the plugin searches the property name key. | _none_ |
+| dd_hostname     | The host the emitted logs should be associated with. If unset, Datadog expects the host to be set with `host`, `hostname`, or `syslog.hostname` attributes. See Datadog Logs preprocessor documentation for recognized attributes. | _none_ |
 
 ### Configuration File