fix: update integration/airflow/README.md reference (OpenLineage#3123)

Signed-off-by: Emmanuel Ferdman <[email protected]>

integration/airflow/README.md

@@ -221,7 +221,7 @@ validation_operators:
 If you're using `GreatExpectationsOperator`, you need to set `validation_operator_name` to an operator that includes OpenLineageValidationAction.
 Setting it in `great_expectations.yml` files isn't enough - the operator overrides it with the default name if a different one is not provided.
 
-To see an example of a working configuration, see [DAG](https://github.com/OpenLineage/OpenLineage/blob/main/integration/airflow/tests/integration/airflow/dags/greatexpectations_dag.py) and [Great Expectations configuration](https://github.com/OpenLineage/OpenLineage/tree/main/integration/airflow/tests/integration/data/great_expectations) in the integration tests.
+To see an example of a working configuration, see [DAG](https://github.com/OpenLineage/OpenLineage/blob/main/integration/airflow/tests/integration/tests/airflow/dags/greatexpectations_dag.py) and [Great Expectations configuration](https://github.com/OpenLineage/OpenLineage/tree/main/integration/airflow/tests/integration/data/great_expectations) in the integration tests.
 
 ### Logging
 In addition to conventional logging approaches, the `openlineage-airflow` package provides an alternative way of configuring its logging behavior. By setting the `OPENLINEAGE_AIRFLOW_LOGGING` environment variable, you can establish the logging level for the `openlineage.airflow` and its child modules.