chore: update readme

README.md

@@ -6,7 +6,7 @@ English | [简体中文](./docs/zh-cn/README.zh-CN.md) | [日本語](./docs/ja/R
 <p align="center">Fast <b>2kB</b> alternative to Moment.js with the same modern API</p>
 <p align="center">
     <a href="https://unpkg.com/dayjs/dayjs.min.js"><img
-            src="https://img.badgesize.io/https://unpkg.com/dayjs/dayjs.min.js?compression=gzip&style=flat-square"
+            src="https://img.shields.io/bundlephobia/minzip/dayjs?style=flat-square&color=%2345cc11"
             alt="Gzip Size"></a>
     <a href="https://www.npmjs.com/package/dayjs"><img src="https://img.shields.io/npm/v/dayjs.svg?style=flat-square&colorB=51C838"
                                                        alt="NPM Version"></a>