d/copyright: refer to full on system GPL-3 license

This follows the guidance of
https://www.debian.org/doc/debian-policy/ch-docs.html#s-copyrightfile

Change-Id: Ic91671a261a1631f95c7de32a56268276aad3c6a
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>

diff --git a/debian/copyright b/debian/copyright
index 11fda01..400c915 100644 (file)
--- a/debian/copyright
+++ b/debian/copyright
@@ -71,3 +71,6 @@ License: GPL-3
  .
  You should have received a copy of the GNU General Public License along
  with this program.  If not, see <http://www.gnu.org/licenses/>.
+ .
+ On Debian systems, the complete text of the GNU General
+ Public License version 3 can be found in "/usr/share/common-licenses/GPL-3".