Fix predeploy script in package.json to use Windows-compatible copy command.

Author: CodeRandomMC

package.json

@@ -16,7 +16,7 @@
     "build": "vite build",
     "lint": "eslint . --ext js,jsx --report-unused-disable-directives --max-warnings 0",
     "preview": "vite preview",
-    "predeploy": "npm run build && cp .nojekyll dist/",
+    "predeploy": "npm run build && copy .nojekyll dist\\",
     "deploy": "gh-pages -d dist"
   },
   "dependencies": {