Updated license URL as suggested by Software::License.

Author: manwar

lib/Module/Install/Metadata.pm

@@ -462,8 +462,8 @@ my %license_urls = (
     lgpl3        => 'http://opensource.org/licenses/lgpl-3.0.html',
     bsd          => 'http://opensource.org/licenses/bsd-license.php',
     gpl          => 'http://opensource.org/licenses/gpl-license.php',
-    gpl2         => 'http://opensource.org/licenses/gpl-2.0.php',
-    gpl3         => 'http://opensource.org/licenses/gpl-3.0.html',
+    gpl2         => 'http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt',
+    gpl3         => 'http://www.gnu.org/licenses/gpl-3.0.txt',
     mit          => 'http://opensource.org/licenses/mit-license.php',
     mozilla      => 'http://opensource.org/licenses/mozilla1.1.php',
     open_source  => undef,