fix ansible-format-automatic-specification following PEP-3101 specs

Signed-off-by: Roberto Alfieri <[email protected]>

Author: rebtoor

plugins/modules/podman_prune.py

@@ -173,7 +173,7 @@ def podmanExec(module, target, filters, executable):
         changed = True
     if rc != 0:
         module.fail_json(
-            msg="Error executing prune on {0}: {1}".format(target, err))
+            msg="Error executing prune on {target}: {err}".format(target=target, err=err))
     return changed, out, err