Add extra line to LICENSE-MIT

As discussed in #4

I also removed the date, so this file doesn't have to be updated on the first commit of every calendar year.

Author: thejpster

LICENSE-MIT

@@ -1,4 +1,5 @@
-Copyright (c) 2025 Ferrous Systems
+Copyright (c) The Cortex-R Crate Developers
+Copyright (c) Ferrous Systems
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal