Fix setuptools (#925)

Fix #917
Signed-off-by: Sagi Shnaidman <[email protected]>

Author: sshnaidm

setup.cfg

@@ -1,7 +1,7 @@
 [metadata]
 name = ansible-podman-collections.containers
 summary = Ansible collections for Podman
-description-file =
+description_file =
     README.md
 
 author = Sagi Shnaidman (@sshnaidm)