chore(lint): remove lint-md workflow and badge

- Remove lint markdown workflow and badge from README.md
- Update README.md content

README.md

@@ -2,7 +2,6 @@
 
 > ❤️ 每天收集喜欢的开源项目。欢迎推荐。
 
-[![lint markdown](https://github.com/guanguans/favorite-link/actions/workflows/lint-md.yml/badge.svg)](https://github.com/guanguans/favorite-link/actions/workflows/lint-md.yml)
 [![feed](https://github.com/guanguans/favorite-link/actions/workflows/feed.yml/badge.svg)](https://github.com/guanguans/favorite-link/actions/workflows/feed.yml)
 [![mirror](https://github.com/guanguans/favorite-link/actions/workflows/mirror.yml/badge.svg)](https://github.com/guanguans/favorite-link/actions/workflows/mirror.yml)
 
@@ -12,10 +11,6 @@
 | [README.atom](https://raw.githubusercontent.com/guanguans/favorite-link/master/README.atom) | [README.atom](https://gitlab.com/yzmguanguan/favorite-link/-/raw/master/README.atom) |
 
 
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 ### April 19, 2024 
 - [albertborsos/yii2-lib: yii2 的有用类](https://github.com/albertborsos/yii2-lib) 
 - [amalshaji/portr: 专为团队设计的开源 ngrok 替代方案](https://github.com/amalshaji/portr)