fix incorrect arch

Author: SaicharanKandukuri

core/default/mate/build.sh

@@ -15,7 +15,7 @@ INCLUDE_LIST="$BUILD_CONFIG_DIR/$BUILDNAME/include.list"
 EXTRA_INCLUDE_LIST="$BUILD_CONFIG_DIR/$BUILDNAME/include-i.list"
 EXTRA_CONFIG_SCRIPT="$BUILD_CONFIG_DIR/$BUILDNAME/extra-config.sh"
 OUT_DIR="${ROOT_DIR}/out/${BUILDNAME}"
-BUILD_ARCH="aarch64 armhf amd64"
+BUILD_ARCH="arm64 armhf amd64"
 PLUGIN_DIR="${ROOT_DIR}/plugins"
 INCLUDE_PACKAGES="$(cat "$INCLUDE_LIST")"
 SUITE="hirsute" # (recomended: hirsute)