package/libdvdnav: update the upstream URL in Config.in

Update the upstream URL in the help text in Config.in as it
is pointing to an old page.

Signed-off-by: Mark Corbin <mark@dibsco.co.uk>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/libdvdnav/Config.in

@@ -7,7 +7,7 @@ config BR2_PACKAGE_LIBDVDNAV
 	  DVD navigation features such as DVD menus, multiangle
 	  playback and even interactive DVD games.
 
-	  http://www.mplayerhq.hu
+	  https://www.videolan.org/developers/libdvdnav.html
 
 comment "libdvdnav needs a toolchain w/ threads"
 	depends on !BR2_TOOLCHAIN_HAS_THREADS