[BUG] Copy button in codeblock does not appear

[Bert-JanP]

Describe the bug 描述你遇到的错误

The documentation indicates that the lines as shown below create a copy button for all code blocks, unfortunately this does not happen.

    [params.page.code]
      # whether to show the copy button of the code block
      copy = true
      # the maximum number of lines of displayed code by default
      maxShownLines = 50

一段简短的对于你遇到的错误的描述.

Expected behavior 期待的行为

A copy button is created for each codeblock

A clear and concise description of what you expected to happen.
一段简短的对于你期待的行为的描述.

I expect that a button is created for each codeblock

Screenshots 屏幕截图

If applicable, add screenshots to help explain your problem.
如果可以的话, 提供屏幕截图对解决问题很有帮助.

Build Environment 构建环境

• OS: Ubuntu
• Theme version/commit e9e89a4
• Hugo version v0.92.2

Please try to use Hugo extended version before opening the issue.
请在创建 issue 之前先尝试使用 Hugo extended 版本构建.

Preview Environment 预览环境

• OS: [e.g. Windows 11, macOS, Ubuntu, iOS, Android]
• Browser type/version [e.g. Chrome 103.0.5060.53, Safari 15.5, Edge 103.0.1264.37, Firefox 102.0]

Additional Information 补充信息

Configuration files or front matter code...
配置文件或者前置参数的代码...