chore: update playground (#25)

Use `workspace:*` to avoid build error.

Author: colinaaa

playground/package.json

@@ -2,6 +2,9 @@
   "name": "playground",
   "private": true,
   "version": "0.0.0",
+  "devDependencies": {
+    "rsbuild-plugin-tailwindcss": "workspace:*"
+  },
   "scripts": {
     "dev": "npx rsbuild dev",
     "build": "npx rsbuild build"

playground/rsbuild.config.ts

@@ -1,5 +1,5 @@
 import { defineConfig } from '@rsbuild/core';
-import { pluginTailwindCSS } from '../src';
+import { pluginTailwindCSS } from 'rsbuild-plugin-tailwindcss';
 
 export default defineConfig({
   plugins: [pluginTailwindCSS()],