convert to unix line-endings [skip ci]

quantum/keymap_extras/keymap_slovenian.h

@@ -1,4 +1,4 @@
-/* Copyright 2018 Žan Pevec
+/* Copyright 2018 Žan Pevec
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by