rise: s/writeText/writeTextDir/

Author: vaibhavsagar

rise/textfile.nix

@@ -1,6 +1,6 @@
 let
   pkgs = import <nixpkgs> {};
-in pkgs.writeText "notebook.json" (builtins.toJSON {
+in pkgs.writeTextDir "notebook.json" (builtins.toJSON {
   load_extensions = {
     "rise/main" = true;
   };