**Apache Airflow version**: latest (main branch)

**What happened**:

There is a little typo in this line of code: https://github.com/apache/airflow/blob/6172b0e6c796d1d757ac1806b671ee168c031b1e/airflow/contrib/operators/gcs_to_bq.py#L40

**What you expected to happen**:

It should be *gcs_to_bigquery* instead of *gcs_to_bq*:

```
Please use `airflow.providers.google.cloud.transfers.gcs_to_bigquery.GCSToBigQueryOperator`.""",
```

tests/providers/google/cloud/transfers/test_gcs_to_bigquery.py
operator = GCSToBigQueryOperator(
            task_id=TASK_ID,
            bucket=TEST_BUCKET,
            source_objects=TEST_SOURCE_OBJECTS,
            destination_project_dataset_table=TEST_EXPLICIT_DEST,
            max_id_key=MAX_ID_KEY,
        )
        
        bq_hook.return_value.get_conn.return_value.cursor.return_value.use_legacy_sql = True
        operator.execute(None)
        bq_hook.return_value.get_conn.return_value.cursor.return_value.execute.assert_called_once_with(
            "SELECT MAX(id) FROM [test-project.dataset.table]"
        )
    @mock.patch('airflow.providers.google.cloud.transfers.gcs_to_bigquery.BigQueryHook')
    def test_execute_explicit_project(self, bq_hook):
        operator = GCSToBigQueryOperator(
            task_id=TASK_ID,
            bucket=TEST_BUCKET,
            source_objects=TEST_SOURCE_OBJECTS,
            destination_project_dataset_table=TEST_EXPLICIT_DEST,
            max_id_key=MAX_ID_KEY,
        )
        
        bq_hook.return_value.get_conn.return_value.cursor.return_value.use_legacy_sql = False
        operator.execute(None)
        bq_hook.return_value.get_conn.return_value.cursor.return_value.execute.assert_called_once_with(
            "SELECT MAX(id) FROM `test-project.dataset.table`"
        )
    @mock.patch('airflow.providers.google.cloud.transfers.gcs_to_bigquery.BigQueryHook')
    def test_labels(self, bq_hook):