In any case, you should investigate how/if you get your documents out of these apps. Apple Notes, for example, is a one-way silo.
As to your shortcut: I guess that items are – items, plural. What, then, is get the content of item "items" supposed to do? I don’t use shortcuts, ever, but I suppose that you’ll have to get a single item from DT.
And the last action is weird: Moving something from one place to the same place doesn’t make any sense at all. Is “Obisdian” just another app or just a typo?
There’s a ton of posts here on combining DT(TG) with Obsidian. Personally, I’d not try to automate anythig with Shortcuts on iOS, but rather with scripting on macOS.