package/unzip: make version compliant with release-monitoring

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
diff --git a/package/unzip/unzip.mk b/package/unzip/unzip.mk
index 1d97205..d435fb6 100644
--- a/package/unzip/unzip.mk
+++ b/package/unzip/unzip.mk
@@ -4,8 +4,8 @@
 #
 ################################################################################
 
-UNZIP_VERSION = 60
-UNZIP_SOURCE = unzip$(UNZIP_VERSION).tgz
+UNZIP_VERSION = 6.0
+UNZIP_SOURCE = unzip$(subst .,,$(UNZIP_VERSION)).tgz
 UNZIP_SITE = ftp://ftp.info-zip.org/pub/infozip/src
 UNZIP_LICENSE = Info-ZIP
 UNZIP_LICENSE_FILES = LICENSE