Merge pull request #733 from vitejs/sync-b02727c6-1

docs(en): merge docs-cn/sync-docs into docs-cn/dev @ b02727c

Author: waynzh

config/worker-options.md

@@ -5,7 +5,7 @@
 ## worker.format
 
 - **类型：** `'es' | 'iife'`
-- **默认：** `iife`
+- **默认：** `'iife'`
 
 worker 打包时的输出类型。