Docs: Update docs for creating nested folders (#82310)

docs/sources/developers/http_api/folder.md

@@ -160,7 +160,8 @@ Authorization: Bearer eyJrIjoiT0tTcG1pUlY2RnVKZTFVaDFsNFZXdE9ZWmNrMkZYbk
 - **403** – Access Denied
 - **409** - Folder already exists
 
-
+## Update folder
+
 `PUT /api/folders/:uid`
 
 Updates an existing folder identified by uid.
@@ -168,6 +169,7 @@ JSON Body schema:
 **Required permissions**
 
 See note in the [introduction]({{< ref "#folder-api" >}}) for an explanation.
+
 | Action          | Scope       |
 | --------------- | ----------- |
 | `folders:write` | `folders:*` |