Learn Editor: Update delta-updates.md

Author: andrewbrownmsft

articles/iot-hub-device-update/delta-updates.md

@@ -32,7 +32,7 @@ The Device Update agent _orchestrates_ the update process on the device, includi
 
 ### Update handler
 
-An update handler integrates with the Device Update agent to perform the actual update install. For delta updates, start with the [`microsoft/swupdate:2` update handler](https://github.com/Azure/iot-hub-device-update/blob/main/src/extensions/step_handlers/swupdate_handler_v2/README.md) if you don't already have your own SWUpdate update handler that you want to modify. **If you use your own update handler, be sure to enable zstd decompression in SWUpdate**.
+An update handler integrates with the Device Update agent to perform the actual update install. For delta updates, start with the [`microsoft/swupdate:2` update handler](https://github.com/Azure/iot-hub-device-update/blob/main/src/extensions/step_handlers/swupdate_handler_v2/README.md) if you don't already have your own SWUpdate update handler that you want to modify.
 
 ### Delta processor