docs: update to_geodataframe to use query_and_wait functionality (#1800)

* Updates file

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* Correcting RowIterator

* Correcting variable names

* Correcting methods

---------

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>
Co-authored-by: Kira <kirnendra@google.com>

samples/geography/to_geodataframe.py

@@ -33,6 +33,6 @@ def get_austin_service_requests_as_geography() -> "pandas.DataFrame":
         LIMIT 10
     """
 
-    df = client.query(sql).to_geodataframe()
+    df = client.query_and_wait(sql).to_geodataframe()
     # [END bigquery_query_results_geodataframe]
     return df