python3Packages.aiowinreg: prompt_toolkit -> prompt-toolkit

pkgs/development/python-modules/aiowinreg/default.nix

···
 , fetchPypi
 , pythonOlder
 , winacl
-, prompt_toolkit
+, prompt-toolkit
 }:
 
 buildPythonPackage rec {
···
   };
 
   propagatedBuildInputs = [
-    prompt_toolkit
+    prompt-toolkit
     winacl
   ];