next.js build: building contentlayer prior to TSC or adding more clear docs

When following the official Getting Started example for Next.js, the app fails to build on CI or any environemnt where .contentlayer doesn't exist already.

This appears to be because TSC runs prior to contentlayer, which errors out.

I'm not sure if this can be changed at all (to run a Next plugin prior to the TSC step). That would seem like the ideal solution, but otherwise, would be great to update the documentation & examples to modify the build step

"scripts": {
  "build": "contentlayer && next build"
}

I'm happy to make a PR to help out, just wanted to check if this is indeed an issue that others experience or if I'm really missing something basic

从官方 Getting Started 示例及其 package.json 构建脚本开始，然后在没有 .contentlayer 的环境中重现 CI 失败。检查文档中的构建命令是否需要先运行 Contentlayer；当示例成功构建，并且文档反映所需命令或已确认的受支持行为时，即表示完成。