helpers/generate_common: fix URL to detect updater version

helpers/generate_common.sh

@@ -74,7 +74,7 @@ get_usign() {
 updater_ng_repodetect() {
 	local REPO="$1"
 	local BOARD="${2:-mox}"
-	local VERSION="$(curl "https://repo.turris.cz/$REPO/packages/$BOARD/turrispackages/Packages" | \
+	local VERSION="$(curl "https://repo.turris.cz/$REPO/$BOARD/packages/turrispackages/Packages" | \
 		awk '/^Package: updater-ng$/,/^$/ { if ($1 == "Version:") { gsub("-.*$","",$2); print $2 } }')"
 	if [ -z "$VERSION" ]; then
 		warn "Detection of updater-ng version from repository failed. Using $UPDATER_VERSION instead."