axel: fix download URL

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/axel/axel.mk

@@ -6,7 +6,7 @@
 
 AXEL_VERSION = 2.4
 AXEL_SOURCE = axel-$(AXEL_VERSION).tar.gz
-AXEL_SITE = https://alioth.debian.org/frs/download.php/3015
+AXEL_SITE = https://alioth.debian.org/frs/download.php/file/3015
 AXEL_LICENSE = GPLv2+
 AXEL_LICENSE_FILES = COPYING