我填写了placeholder配置，但还是默认的Just Go Go

[k23223]

环境信息
hexo: 6.3.0
butterfly:4.9.0
valine: 1.5.1

配置信息
valine:
appId: xxxxx # leancloud application app id
appKey: xxxx # leancloud application app key
placeholder: "(͒˶´⚇`˵)͒ 快来留下你的小脚印吧~~" # valine comment input placeholder(like: Please leave your footprints )
avatar: monsterid # gravatar style https://valine.js.org/#/avatar
serverURLs: # This configuration is suitable for domestic custom domain name users, overseas version will be automatically detected (no need to manually fill in)
bg: xxxx(脱敏)
visitor: false
option: