docs: Prepare for new sub tree

See #11925

docs/content/en/functions/os/Stat.md

@@ -1,31 +0,0 @@
----
-title: os.Stat
-description: Returns a FileInfo structure describing a file or directory.
-categories: []
-keywords: []
-action:
-  aliases: []
-  related:
-    - functions/os/FileExists
-    - functions/os/Getenv
-    - functions/os/ReadDir
-    - functions/os/ReadFile
-  returnType: os.FileInfo
-  signatures: [os.Stat PATH]
-aliases: [/functions/os.stat]
----
-
-The `os.Stat` function attempts to resolve the path relative to the root of your project directory. If a matching file or directory is not found, it will attempt to resolve the path relative to the [`contentDir`](/getting-started/configuration#contentdir). A leading path separator (`/`) is optional.
-
-```go-html-template
-{{ $f := os.Stat "README.md" }}
-{{ $f.IsDir }}    → false (bool)
-{{ $f.ModTime }}  → 2021-11-25 10:06:49.315429236 -0800 PST (time.Time)
-{{ $f.Name }}     → README.md (string)
-{{ $f.Size }}     → 241 (int64)
-
-{{ $d := os.Stat "content" }}
-{{ $d.IsDir }}    → true (bool)
-```
-
-Details of the `FileInfo` structure are available in the [Go documentation](https://pkg.go.dev/io/fs#FileInfo).