docs: add structured_dataset_workflow_with_nested_type

Signed-off-by: Austin Liu <[email protected]>

docs/user_guide/data_types_and_io/structureddataset.md

@@ -265,3 +265,13 @@ Nested field StructuredDataset should be run when flytekit version > 1.11.0.
 ```
 
 [flytesnacks]: https://github.com/flyteorg/flytesnacks/tree/master/examples/data_types_and_io/
+
+### The nested typed columns
+
+Most storage formats have support for nested field structures today (Avro, parquet, bq) and so is StructuredDatasets.
+
+
+```{rli} https://raw.githubusercontent.com/flyteorg/flytesnacks/master/examples/data_types_and_io/data_types_and_io/structured_dataset.py
+:caption: data_types_and_io/structured_dataset.py
+:lines: 158-293
+```