Update README.md

Author: phucbm

README.md

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 # Nextra Docs Starter 
 
+![Vercel Deploy](https://deploy-badge.vercel.app/vercel/nextra-docs-starter)
+
 This starter template includes the following features:
 
 - [x] **Nextra 4**
 - [x] **Search with Pagefind**
-- [x] **Lucide Icons**
 
 [**Live Demo →**](https://nextra-docs-starter.vercel.app)