Merge pull request #34072: Updates Managed Javadocs and pydocs to refer to runner specific features

Author: chamikaramj

sdks/java/managed/src/main/java/org/apache/beam/sdk/managed/Managed.java

@@ -80,6 +80,13 @@
  *
  * inputRows.apply(Managed.write(ICEBERG).withConfigUrl("path/to/config.yaml"));
  * }</pre>
+ *
+ * <h3>Runner specific features</h3>
+ *
+ * Google Cloud Dataflow supports additional management features for {@code Managed} including
+ * automatically upgrading transforms to the latest supported version. For more details and
+ * examples, please see <a href="https://cloud.google.com/dataflow/docs/guides/managed-io">Dataflow
+ * managed I/O</a>.
  */
 public class Managed {
 

sdks/python/apache_beam/transforms/managed.py

@@ -62,6 +62,13 @@
 
 **Note:** Today, all managed transforms are essentially cross-language
 transforms, and Java's ManagedSchemaTransform is used under the hood.
+
+Runner specific features
+========================
+Google Cloud Dataflow supports additional management features for `managed`
+including automatically upgrading transforms to the latest supported version.
+For more details and examples, please see
+Dataflow managed I/O https://cloud.google.com/dataflow/docs/guides/managed-io.
 """
 
 from typing import Any