chore: update usage

hardfist · hardfist · commit 83c731f4294a · 2025-05-12T10:21:32.000+08:00
diff --git a/README.md b/README.md
@@ -37,8 +37,6 @@ Import the plugin in your code:
 // Named import (recommended)
 import { ReactRefreshRspackPlugin } from "@rspack/plugin-react-refresh";
 
-// Default import
-import ReactRefreshRspackPlugin from "@rspack/plugin-react-refresh";
 ```
 
 - CommonJS:
