docs: Prepare for new sub tree

See #11925

docs/content/en/functions/strings/Title.md

@@ -1,32 +0,0 @@
----
-title: strings.Title
-description: Returns the given string, converting it to title case.
-categories: []
-keywords: []
-action:
-  aliases: [title]
-  related:
-    - functions/strings/FirstUpper
-    - functions/strings/ToLower
-    - functions/strings/ToUpper
-  returnType: string
-  signatures: [strings.Title STRING]
-aliases: [/functions/title]
----
-
-```go-html-template
-{{ title "table of contents (TOC)" }} → Table of Contents (TOC)
-```
-
-By default, Hugo follows the capitalization rules published in the [Associated Press Stylebook]. Change your [site configuration] if you would prefer to:
-
-- Follow the capitalization rules published in the [Chicago Manual of Style]
-- Capitalize the first letter of every word
-- Capitalize the first letter of the first word
-- Disable the effects of the `title` function
-
-The last option is useful if your theme uses the `title` function, and you would prefer to manually capitalize strings as needed.
-
-[Associated Press Stylebook]: https://www.apstylebook.com/
-[Chicago Manual of Style]: https://www.chicagomanualofstyle.org/home.html
-[site configuration]: /getting-started/configuration/#configure-title-case