docs: remove duplicate package introduction

Author: mmdapl

README.md

@@ -10,6 +10,7 @@
 
 - `egg-demo`
 - `nest-demo`
+- `vitepress-demo`
 - `vuepress-demo`
 
 ### 开源模块
@@ -33,8 +34,6 @@
 - `@142vip/redis`
 - `@142vip/release-version`
 - `@142vip/typeorm`
-- `@142vip/release-version`
-- `@142vip/typeorm`
 - `@142vip/utils`
 - `@141vip/vitepress`
 - `@142vip/vuepress`