docs: Prepare for new sub tree

See #11925

docs/content/en/functions/path/Dir.md

@@ -1,27 +0,0 @@
----
-title: path.Dir
-description: Replaces path separators with slashes (/) and returns all but the last element of the given path.
-categories: []
-keywords: []
-action:
-  aliases: []
-  related:
-    - functions/path/Base
-    - functions/path/BaseName
-    - functions/path/Clean
-    - functions/path/Ext
-    - functions/path/Join
-    - functions/path/Split
-  returnType: string
-  signatures: [path.Dir PATH]
-aliases: [/functions/path.dir]
----
-
-```go-html-template
-{{ path.Dir "a/news.html" }} → a
-{{ path.Dir "news.html" }} → .
-{{ path.Dir "a/b/c" }} → a/b
-{{ path.Dir "/a/b/c" }} → /a/b
-{{ path.Dir "/a/b/c/" }} → /a/b/c
-{{ path.Dir "" }} → .
-```