Ensure we detect this license correctly

See : https://github.com/JanKallman/EPPlus/blob/55c5ba6169eaa6ae7867fefb36a84cc0b28be85a/SampleApp/Sample16.cs#L10
```
* EPPlus is an Open Source project provided under the
* GNU General Public License (GPL) as published by the
* Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* The GNU General Public License can be viewed at http://www.opensource.org/licenses/gpl-license.php
* If you unfamiliar with this license or have questions about it, here is an http://www.gnu.org/licenses/gpl-faq.html
*
* The code for this project may be used and redistributed by any means PROVIDING it is
* not sold for profit without the author's written consent, and providing that this notice
* and the author's name and all copyright notices remain intact.
*
* All code and executables are provided "as is" with no warranty either express or implied.
* The author accepts no liability for any damage or loss of business that this product may cause.
```

and https://github.com/JanKallman/EPPlus/blob/55c5ba6169eaa6ae7867fefb36a84cc0b28be85a/EPPlus/IRangeID.cs#L10

```
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) 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
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
*
* The GNU Lesser General Public License can be viewed at http://www.opensource.org/licenses/lgpl-license.php
* If you unfamiliar with this license or have questions about it, here is an http://www.gnu.org/licenses/gpl-faq.html
*
* All code and executables are provided "as is" with no warranty either express or implied.
* The author accepts no liability for any damage or loss of business that this product may cause.

```