package/libkcapi: update site path

Update the site path to reflect the recent organizational changes on the
chronox.de website.

Fixes:
- http://autobuild.buildroot.org/results/77243633783ac2d037d15d7e9c01384781fe700e

Signed-off-by: Tan En De <ende.tan@starfivetech.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
(cherry picked from commit d4d8881731ed745aff676b860a05abdff9ff1a0c)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/libkcapi/libkcapi.mk

@@ -6,7 +6,7 @@
 
 LIBKCAPI_VERSION = 1.5.0
 LIBKCAPI_SOURCE = libkcapi-$(LIBKCAPI_VERSION).tar.xz
-LIBKCAPI_SITE = http://www.chronox.de/libkcapi
+LIBKCAPI_SITE = http://www.chronox.de/libkcapi/releases/$(LIBKCAPI_VERSION)
 LIBKCAPI_AUTORECONF = YES
 LIBKCAPI_INSTALL_STAGING = YES
 LIBKCAPI_LICENSE = BSD-3-Clause (library), BSD-3-Clause or GPL-2.0 (programs)