python prefix for recursive pth loader and fix typo

pkgs/development/python-modules/recursive-pth-loader/default.nix

···
 { stdenv, python }:
 
 stdenv.mkDerivation rec {
-  name = "resursive-pth-loader-1.0";
+  name = "python-recursive-pth-loader-1.0";
 
   unpackPhase = "true";