Replaced ambigious characters

common.nix

@@ -24,7 +24,7 @@ rec {
 
   # This value determines the NixOS release from which the default
   # settings for stateful data, like file locations and database versions
-  # on your system were taken. It‘s perfectly fine and recommended to leave
+  # on your system were taken. It's perfectly fine and recommended to leave
   # this value at the release version of the first install of this system.
   # Before changing this value read the documentation for this option
   # (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).

configuration.nix

@@ -17,7 +17,7 @@ in
     efi.canTouchEfiVariables = true;
   };
 
-  # Define a user account. Don't forget to set a password with ‘passwd’.
+  # Define a user account. Don't forget to set a password with 'passwd'.
   users.users.${common.username} = {
     isNormalUser = true;
     description = common.username;