nimPackages.markdown: abdbe5e -> a661c26

pkgs/development/nim-packages/markdown/default.nix

···
 fetchFromGitHub {
   owner = "soasme";
   repo = "nim-markdown";
-  rev = "abdbe5e";
-  sha256 = "0f3c1sxvhbbds43c9l8cz69pfpf984msj1lv4pb7bzpxb5zil2wy";
+  rev = "a661c26";
+  hash = "sha256-/GkCSOmg2JxQhiDS8vgnKIoKvVgld/uIilUHslvwMnk=";
 }