docs: Prepare for new sub tree

See #11925

docs/content/en/functions/transform/HTMLEscape.md

@@ -1,30 +0,0 @@
----
-title: transform.HTMLEscape
-description: Returns the given string, escaping special characters by replacing them with HTML entities.
-categories: []
-keywords: []
-action:
-  aliases: [htmlEscape]
-  related:
-    - functions/transform/HTMLUnescape
-  returnType: string
-  signatures: [transform.HTMLEscape INPUT]
-aliases: [/functions/htmlescape]
----
-
-The `transform.HTMLEscape` function escapes five special characters by replacing them with [HTML entities]:
-
-- `&` → `&`
-- `<` → `&lt;`
-- `>` → `&gt;`
-- `'` → `&#39;`
-- `"` → `&#34;`
-
-For example:
-
-```go-html-template
-{{ htmlEscape "Lilo & Stitch" }} → Lilo &amp; Stitch
-{{ htmlEscape "7 > 6" }} → 7 &gt; 6
-```
-
-[html entities]: https://developer.mozilla.org/en-US/docs/Glossary/Entity