d9993a7790
add gcs broker load faq When the '_' is used at buckt name, will report an error: Missing required property: uri the gcs bucket not match the s3 bucket name format: https://docs.aws.amazon.com/zh_cn/AmazonS3/latest/userguide/bucketnamingrules.html we'd better not use '_' in bucket. <!--Describe your changes.-->