docs: Prepare for new sub tree

See #11925

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

@@ -1,47 +0,0 @@
----
-title: TableOfContents
-description: Returns a table of contents for the given page.
-categories: []
-keywords: []
-action:
-  related:
-    - methods/page/Fragments
-  returnType: template.HTML
-  signatures: [PAGE.TableOfContents]
----
-
-The `TableOfContents` method on a `Page` object returns an ordered or unordered list of the markdown [ATX] and [setext] headings within the page content.
-
-[atx]: https://spec.commonmark.org/0.30/#atx-headings
-[setext]: https://spec.commonmark.org/0.30/#setext-headings
-
-This template code:
-
-```go-html-template
-{{ .TableOfContents }}
-```
-
-Produces this HTML:
-
-```html
-<nav id="TableOfContents">
-  <ul>
-    <li><a href="#section-1">Section 1</a>
-      <ul>
-        <li><a href="#section-11">Section 1.1</a></li>
-        <li><a href="#section-12">Section 1.2</a></li>
-      </ul>
-    </li>
-    <li><a href="#section-2">Section 2</a></li>
-  </ul>
-</nav>
-```
-
-By default, the `TableOfContents` method returns an unordered list of level 2 and level 3 headings. You can adjust this in your site configuration:
-
-{{< code-toggle file=hugo >}}
-[markup.tableOfContents]
-endLevel = 3
-ordered = false
-startLevel = 2
-{{< /code-toggle >}}