Added Linux trademark sentence to README

README.md

@@ -1,4 +1,5 @@
 Copyright (C)  2020  Masscollabs Services, hwpplayers, procyberian(procyberian-linux), amassivus
+
 Permission is granted to copy, distribute and/or modify this document
 under the terms of the GNU Free Documentation License, Version 1.3
 or any later version published by the Free Software Foundation;
@@ -22,3 +23,5 @@ Feel free to email to these addresses :
 * support at masscollabs dot com
 
 or join [procyberian Freenode channel](https://webchat.freenode.net/?channels=#procyberian) to ask your questions.
+
+* Linux® is a registered trademark of Linus Torvalds [(info)](http://www.linuxfoundation.org/programs/legal/trademark/attribution)