Add docs for auto-removal on daemon

Docs for #20848: move "--rm" to daemon side.

Add description for introduced API changes.

Signed-off-by: Zhang Wei <zhangwei555@huawei.com>

docs/reference/api/docker_remote_api.md

@@ -116,7 +116,7 @@ This section lists each version from latest to oldest.  Each listing includes a
 
 [Docker Remote API v1.25](docker_remote_api_v1.25.md) documentation
 
-* `POST /containers/create` now takes `AutoRemove` in HostConfig, auto-removal will be done on daemon side.
+* `POST /containers/create` now takes `AutoRemove` in HostConfig, to enable auto-removal of the container on daemon side when the container's process exits.
 
 ### v1.24 API changes
 

docs/reference/api/docker_remote_api_v1.25.md

@@ -459,6 +459,8 @@ Create a container
             The default is not to restart. (optional)
             An ever increasing delay (double the previous delay, starting at 100mS)
             is added before each restart to prevent flooding the server.
+    -   **AutoRemove** - Boolean value, set to `true` to automatically remove the container on daemon side
+            when the container's process exits.
     -   **UsernsMode**  - Sets the usernamespace mode for the container when usernamespace remapping option is enabled.
            supported values are: `host`.
     -   **NetworkMode** - Sets the networking mode for the container. Supported