docs: update client_query_w_named_params.py to use query_and_wait API (#1782)

* docs: update client_query_w_named_params.py to use query_and_wait API * Update client_query_w_named_params.py lint --------- Co-authored-by: Salem Boyland <salemb@google.com> Co-authored-by: Kira <kirnendra@google.com>

Author: 3 people

samples/client_query_w_named_params.py

@@ -33,8 +33,10 @@ def client_query_w_named_params() -> None:
  bigquery.ScalarQueryParameter("min_word_count", "INT64", 250),
  ]
  )
- query_job = client.query(query, job_config=job_config) # Make an API request.
+ results = client.query_and_wait(
+ query, job_config=job_config
+ ) # Make an API request.
 
- for row in query_job:
+ for row in results:
  print("{}: \t{}".format(row.word, row.word_count))
  # [END bigquery_query_params_named]