Switch to for-the-badge

Author: stevenjoezhang

.gitignore

@@ -2,3 +2,5 @@ node_modules/
 package-lock.json
 .DS_Store
 tmp/
+index.node
+deploy.sh

README.md

@@ -73,13 +73,13 @@ Here is a result from [GTmetrix](https://gtmetrix.com) to show you the changes b
 
 ![Comparison](https://user-images.githubusercontent.com/980449/35233293-a8229c72-ffd8-11e7-8a23-3b8bc10d40c3.png)
 
-[github-image]: https://img.shields.io/github/actions/workflow/status/next-theme/hexo-optimize/linter.yml?branch=main&style=flat-square
-[npm-image]: https://img.shields.io/npm/v/hexo-optimize.svg?style=flat-square
-[lic-image]: https://img.shields.io/npm/l/hexo-optimize?style=flat-square
+[github-image]: https://img.shields.io/github/actions/workflow/status/next-theme/hexo-optimize/linter.yml?branch=main&style=for-the-badge
+[npm-image]: https://img.shields.io/npm/v/hexo-optimize.svg?style=for-the-badge
+[lic-image]: https://img.shields.io/npm/l/hexo-optimize?style=for-the-badge
 
-[size-image]: https://img.shields.io/github/languages/code-size/next-theme/hexo-optimize?style=flat-square
-[dm-image]: https://img.shields.io/npm/dm/hexo-optimize?style=flat-square
-[dt-image]: https://img.shields.io/npm/dt/hexo-optimize?style=flat-square
+[size-image]: https://img.shields.io/github/languages/code-size/next-theme/hexo-optimize?style=for-the-badge
+[dm-image]: https://img.shields.io/npm/dm/hexo-optimize?style=for-the-badge
+[dt-image]: https://img.shields.io/npm/dt/hexo-optimize?style=for-the-badge
 
 [github-url]: https://github.com/next-theme/hexo-optimize/actions?query=workflow%3ALinter
 [npm-url]: https://www.npmjs.com/package/hexo-optimize