Update copyright year

LICENSE

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2019 Daniil Baturin
+Copyright (c) 2022 Daniil Baturin et al.
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

src/utils.ml

@@ -97,8 +97,8 @@ let regex_replace ?(all=false) s pat sub =
 (** Just prints a hardcoded program version *)
 let print_version () =
   Printf.printf "soupault %s\n" Defaults.version_string;
-  print_endline "Copyright 2021 Daniil Baturin";
-  print_endline "Soupault is free software distributed under the MIT license";
+  print_endline "Copyright 2022 Daniil Baturin et al.";
+  print_endline "soupault is free software distributed under the MIT license";
   print_endline "Visit https://www.soupault.app/reference-manual for documentation"
 
 (** Warns about a deprecated option *)