docs: Prepare for new sub tree

See #11925

docs/content/en/methods/page/Draft.md

@@ -1,21 +0,0 @@
----
-title: Draft
-description: Reports whether the given page is a draft as defined in front matter.
-categories: []
-keywords: []
-action:
-  related: []
-  returnType: bool
-  signatures: [PAGE.Draft]
----
-
-By default, Hugo does not publish draft pages when you build your site. To include draft pages when you build your site, use the `--buildDrafts` command line flag.
-
-{{< code-toggle file=content/posts/post-1.md fm=true >}}
-title = 'Post 1'
-draft = true
-{{< /code-toggle >}}
-
-```go-html-template
-{{ .Draft }} → true
-```