chore(license): update date ranges; standardise style (#705)

Author: Fdawgs

LICENSE

@@ -1,9 +1,8 @@
 MIT License
 
-Copyright (c) 2016-2020 The Fastify Team
+Copyright (c) 2016-present The Fastify team
 
-The Fastify team members are listed at https://github.com/fastify/fastify#team
-and in the README file.
+The Fastify team members are listed at https://github.com/fastify/fastify#team.
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal