Do no longer use autocd of zsh

Some folders might have the same name as commands and reduce speed of
auto completion. E.g. one needs to skip the folder to complete the
command.

home/programs/zsh.nix

@@ -9,7 +9,7 @@
 
   dotDir = ".config/zsh";
 
-  autocd = true;
+  autocd = false;
   enableSyntaxHighlighting = true;
 
   defaultKeymap = "viins";