docs: Prepare for new sub tree

See #11925

docs/content/en/functions/urls/Anchorize.md

@@ -1,37 +0,0 @@
----
-title: urls.Anchorize
-description: Returns the given string, sanitized for usage in an HTML id attribute.
-categories: []
-keywords: []
-action:
-  aliases: [anchorize]
-  related:
-    - functions/urls/URLize
-  returnType: string
-  signatures: [urls.Anchorize INPUT]
-aliases: [/functions/anchorize]
----
-
-{{% include "/functions/urls/_common/anchorize-vs-urlize.md" %}}
-
-## Sanitizing logic
-
-With the default markdown renderer, Goldmark, the sanitizing logic is controlled by your site configuration:
-
-{{< code-toggle file=hugo >}}
-[markup.goldmark.parser]
-autoHeadingIDType = 'github'
-{{< /code-toggle >}}
-
-This controls the behavior of the `anchorize` function and the generation of heading IDs when rendering markdown to HTML.
-
-Set `autoHeadingIDType` to one of:
-
-github
-: Compatible with GitHub. This is the default, and strongly recommended.
-
-github-ascii
-: Similar to the "github" setting, but removes non-ASCII characters. 
-
-blackfriday
-: Provided for backwards compatibility with Hugo v0.59.1 and earlier. This option will be removed in a future release.