Add 'or later' on license file

LICENSE

@@ -659,3 +659,30 @@ specific requirements.
 if any, to sign a "copyright disclaimer" for the program, if necessary.
 For more information on this, and how to apply and follow the GNU AGPL, see
 <https://www.gnu.org/licenses/>.
+
+If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make
+it free software which everyone can redistribute and change under
+these terms.
+
+Attach the following notice to the start of each source file:
+
+    telegram_ytdlp_node.js bot
+    Copyright (C) 2025 FullGreaM
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program. If not, see <https://www.gnu.org/licenses/>.
+
+Make sure to provide a way for users interacting with your program
+remotely (through a network) to obtain the source code, for example
+by providing a link to a repository or downloadable archive.