ebtables: update project URL

Website has been moved to netfilter.org.

Signed-off-by: Yanase Yuki <[email protected]>
Link: https://github.com/openwrt/openwrt/pull/21279
Signed-off-by: Robert Marko <[email protected]>

package/network/utils/ebtables/Makefile

@@ -27,7 +27,7 @@ define Package/ebtables-legacy
   SUBMENU:=Firewall
   DEPENDS:=+kmod-ebtables
   TITLE:=Ethernet bridge firewall administration utility
-  URL:=http://ebtables.sourceforge.net/
+  URL:=https://ebtables.netfilter.org/
   PROVIDES:=ebtables
   ALTERNATIVES:=\
     200:/usr/sbin/ebtables:/usr/sbin/ebtables-legacy