Hello,
Yes you can do that, but not using the GetDocumentLink. You would need to create your own function which would be called with the NodeLinkedNodeID parameter and which would return appropriate link instead or you can code it directly to the transformation like this:
<a href='~<%# CMS.DocumentEngine.DocumentHelper.GetDocument(CMS.GlobalHelper.ValidationHelper.GetInteger(Eval("NodeLinkedNodeID"), 0), "en-us", new CMS.DocumentEngine.TreeProvider(CMS.CMSHelper.CMSContext.CurrentUser)).NodeAliasPath %>.aspx'>link to the original location of linked document</a>
Best regards,
Jan Hermann