chore: comment

Signed-off-by: Dominik Rosiek <drosiek@sumologic.com>

Author: Dominik Rosiek

deploy/helm/sumologic/conf/logs/collector/common/filelog_receiver.yaml

@@ -55,6 +55,7 @@ filelog/containers:
     ## - k8s.container.name
     ## - k8s.namespace.name
     ## - log.file.path
+    ## - time if `sumologic.logs.container.keep_time_attribute` is set to `true`
     - type: retain
       id: keep-fields
       fields: