nmk: build.mk -- Fix typo in gen-ar-target-rule

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Reviewed-by: Dmitry Safonov <dsafonov@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

scripts/nmk/scripts/build.mk

@@ -80,7 +80,7 @@ endef
 
 define gen-ar-target-rule
 $(1): $(3)
-	$$(call msg-link, $$@)
+	$$(call msg-ar, $$@)
 	$$(Q) $$(AR) -rcs$(2) $$@ $(4)
 endef