Add proper link for wheel packages in docs. (#15999)

Co-authored-by: jarek <jarek@penguin>
diff --git a/docs/apache-airflow/installation.rst b/docs/apache-airflow/installation.rst
index db400a7..e8fb3e7 100644
--- a/docs/apache-airflow/installation.rst
+++ b/docs/apache-airflow/installation.rst
@@ -324,7 +324,7 @@
 The |version| downloads are available at:
 
 * `Apache Airflow |version| sdist package <https://downloads.apache.org/airflow/|version|/apache-airflow-|version|-bin.tar.gz>`_ (`asc <https://downloads.apache.org/airflow/|version|/apache-airflow-|version|-bin.tar.gz.asc>`__, `sha512 <https://downloads.apache.org/airflow/|version|/apache-airflow-|version|-bin.tar.gz.sha512>`__)
-* `Apache Airflow |version| wheel package <https://downloads.apache.org/airflow/|version|/apache-airflow-|version|-py3-none-any.whl>`_ (`asc <https://downloads.apache.org/airflow/|version|/apache-airflow-|version|-py3-none-any.whl.asc>`__, `sha512 <https://downloads.apache.org/airflow/|version|/apache-airflow-|version|-py3-none-any.whl.sha512>`__)
+* `Apache Airflow |version| wheel package <https://downloads.apache.org/airflow/|version|/apache_airflow-|version|-py3-none-any.whl>`_ (`asc <https://downloads.apache.org/airflow/|version|/apache_airflow-|version|-py3-none-any.whl.asc>`__, `sha512 <https://downloads.apache.org/airflow/|version|/apache_airflow-|version|-py3-none-any.whl.sha512>`__)
 * `Apache Airflow |version| sources <https://downloads.apache.org/airflow/|version|/apache-airflow-|version|-source.tar.gz>`_ (`asc <https://downloads.apache.org/airflow/|version|/apache-airflow-|version|-source.tar.gz.asc>`__, `sha512 <https://downloads.apache.org/airflow/|version|/apache-airflow-|version|-source.tar.gz.sha512>`__)