chagelog: update docker btrfs backwards compatibility

Author: t-lo

changelog/changes/2023-10-25-docker-gentoo-upstream.md

@@ -2,5 +2,5 @@
   - **NOTE** The docker btrfs storage driver has been de-prioritised; BTRFS backed storage will now default to the `overlay2` driver
     ([changelog](https://docs.docker.com/engine/release-notes/23.0/#bug-fixes-and-enhancements-6), [upstream pr](https://github.com/moby/moby/pull/42661)).
     Using the btrfs driver can still be enforced by creating a respective [docker config](https://docs.docker.com/storage/storagedriver/btrfs-driver/#configure-docker-to-use-the-btrfs-storage-driver) at `/etc/docker/daemon.json`.
-  - **NOTE that if you are using btrfs-backed Docker storage and are upgrading to this new version then the driver for that storage will change to `overlay2`.**
-    To prevent this please create a respective docker daemon configuration file on affected nodes as discussed above.
+  - **NOTE** that if you are already using btrfs-backed Docker storage and are upgrading to this new version, Docker will automatically use the `btrfs` storage driver for backwards-compatibility with your deployment.
+    - **Docker will remove the `btrfs` driver entirely in a future version. Please consider migrating your deployments to the `overlay2` driver.**