fix Cloudflare Vite plugin beta release script (#7826)

Author: petebacondarwin

.github/workflows/prereleases.yml

@@ -80,8 +80,8 @@ jobs:
         env:
           NODE_AUTH_TOKEN: ${{ secrets.NPM_PUBLISH_TOKEN }}
 
-      - name: Publish vite-plugin-cloudflare@beta to NPM
-        run: pnpm --filter vite-plugin-cloudflare publish --tag beta
+      - name: Publish @cloudflare/vite-plugin@beta to NPM
+        run: pnpm --filter vite-plugin publish --tag beta
         env:
           NODE_AUTH_TOKEN: ${{ secrets.NPM_PUBLISH_TOKEN }}