Make the drag-and-drop PDF highlighted text being editable

Per the https://youtu.be/0dYFcObC5dA?t=321, the drag-and-drop pdf highlight can’t be editable if there’s any OCR error need to be fixed manually. Hope this scenario can be handled better.

Just like with any block reference, you can edit its label text with the following syntax:

[Your text here](((id)))

Notice the triple (.