Answer
No — a direct external link to the Document Folder navigator can only ever default the navigator's focus to the TOP of whatever folder it points at, regardless of what's embedded in the link. There's no way to make an external link auto-select and display a specific subfolder deeper within a shown folder tree. The link can either point directly at that specific subfolder as its OWN root folder, effectively opening that subfolder itself as the top-level view, or point at a higher folder in the tree, requiring the user to manually navigate down to the desired subfolder from there.