GNU LESSER GENERAL PUBLIC LICENSE (LGPL) returning incorrect acronym.

[mpcen]

GNU LESSER General Public License or GNU LGPL should return back LGPL acronyms, not GPL.

For example:
GNU Lesser General Public License v3 or later (LGPLv3+) currently returns back GPL-3.0-or-later but should return LGPL-3.0-or-later

[mpcen]

Fix in PR: #34