default-settings: simplified installation

Also fix typo error which will cause build failed.
Fixes: 75954bd ("default-settings: split cnh variant into a separated pkg")

(cherry picked from commit 202742604b)

package/emortal/default-settings/Makefile

@@ -40,12 +40,12 @@ define Package/default-settings/install
 	$(INSTALL_DATA) ./files/openwrt_banner $(1)/etc/openwrt_banner
 
 	$(INSTALL_DIR) $(1)/etc/uci-defaults
-	$(INSTALL_BIN) ./files/zzz-default-settings $(1)/etc/uci-defaults/99-default-settings
+	$(INSTALL_BIN) ./files/99-default-settings $(1)/etc/uci-defaults/
 endef
 
 define Package/default-settings-chn/install
 	$(INSTALL_DIR) $(1)/etc/uci-defaults
-	$(INSTALL_BIN) ./files/zzz-default-settings-chinese $(1)/etc/uci-defaults/99-default-settings-chinese
+	$(INSTALL_BIN) ./files/99-default-settings-chinese $(1)/etc/uci-defaults/
 
 	$(INSTALL_DIR) $(1)/usr/lib/lua/luci/i18n
 	po2lmo ./i18n/default.zh_Hans.po $(1)/usr/lib/lua/luci/i18n/default.zh-cn.lmo