Fix LICENSE text.

LICENSE

 This library is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or (at
-your option) any later version.
+the Free Software Foundation, either version 3 of the License, or
+any later version.
 
 This library is distributed in the hope that it will be useful, but
 WITHOUT ANY WARRANTY; without even the implied warranty of
 General Public License for more details.
 
 You should have received a copy of the GNU General Public License
-along with this program.  If not, see <https://www.gnu.org/licenses/>.
+along with this library.  If not, see <https://www.gnu.org/licenses/>.