docs: Prepare for new sub tree

See #11925

docs/content/en/functions/crypto/MD5.md

@@ -1,26 +0,0 @@
----
-title: crypto.MD5
-description: Hashes the given input and returns its MD5 checksum encoded to a hexadecimal string.
-categories: []
-keywords: []
-action:
-  aliases: [md5]
-  related:
-    - functions/crypto/FNV32a
-    - functions/crypto/HMAC
-    - functions/crypto/SHA1
-    - functions/crypto/SHA256
-  returnType: string
-  signatures: [crypto.MD5 INPUT]
-aliases: [/functions/md5]
----
-
-```go-html-template
-{{ md5 "Hello world" }} → 3e25960a79dbc69b674cd4ec67a72c62
-```
-
-This can be useful if you want to use [Gravatar](https://en.gravatar.com/) for generating a unique avatar:
-
-```html
-<img src="https://www.gravatar.com/avatar/{{ md5 "your@email.com" }}?s=100&d=identicon">
-```