Minor improvements suggested by David

Author: yetanothertw

manage-data/lifecycle/data-stream/tutorial-data-stream-retention.md

@@ -72,9 +72,9 @@ Global default and max retention do not apply to data streams internal to elasti
 
 ## How to configure retention? [retention-configuration]
 
-* By setting the `data_retention` on the data stream level. This retention can be configured in two ways:
+* Configure data retention at the data stream level using the `data_retention` setting. You can do this in two ways:
 
-     * For new data streams, it can be defined in the index template that would be applied during the data stream’s creation. You can use the [create index template API](https://www.elastic.co/docs/api/doc/elasticsearch/operation/operation-indices-put-index-template), for example:
+     * For a new data stream, the `data_retention` setting can be included in the index template that is applied when the data stream is created. You can use the [create index template API](https://www.elastic.co/docs/api/doc/elasticsearch/operation/operation-indices-put-index-template), for example:
 
     ```console
     PUT _index_template/template
@@ -93,7 +93,7 @@ Global default and max retention do not apply to data streams internal to elasti
     }
     ```
 
-     * For an existing data stream, it can be set via the [PUT lifecycle API](https://www.elastic.co/docs/api/doc/elasticsearch/operation/operation-indices-put-data-lifecycle).
+     * For an existing data stream, the `data_retention` setting can be configured using the [PUT lifecycle API](https://www.elastic.co/docs/api/doc/elasticsearch/operation/operation-indices-put-data-lifecycle).
 
     ```console
     PUT _data_stream/my-data-stream/_lifecycle