docs: Prepare for new sub tree

See #11925

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

@@ -1,43 +0,0 @@
----
-title: strings.ReplaceRE
-description: Returns a copy of INPUT, replacing all occurrences of a regular expression with a replacement pattern.
-categories: []
-keywords: []
-action:
-  aliases: [replaceRE]
-  related:
-    - functions/strings/FindRE
-    - functions/strings/FindRESubmatch
-    - functions/strings/Replace
-  returnType: string
-  signatures: ['strings.ReplaceRE PATTERN REPLACEMENT INPUT [LIMIT]']
-aliases: [/functions/replacere]
----
-
-{{% include "functions/_common/regular-expressions.md" %}}
-
-```go-html-template
-{{ $s := "a-b--c---d" }}
-{{ replaceRE `(-{2,})` "-" $s }} → a-b-c-d
-```
-
-Limit the number of replacements using the LIMIT argument:
-
-```go-html-template
-{{ $s := "a-b--c---d" }}
-{{ replaceRE `(-{2,})` "-" $s 1 }} → a-b-c---d
-```
-
-Use `$1`, `$2`, etc. within the replacement string to insert the content of each capturing group within the regular expression:
-
-```go-html-template
-{{ $s := "http://gohugo.io/docs" }}
-{{ replaceRE "^https?://([^/]+).*" "$1" $s }} → gohugo.io
-```
-
-{{% note %}}
-You can write and test your regular expression using [regex101.com](https://regex101.com/). Be sure to select the Go flavor before you begin.
-{{% /note %}}
-
-[RE2]: https://github.com/google/re2/wiki/Syntax
-[string literal]: https://go.dev/ref/spec#String_literals