* Added unpublishing instructions for Joplin Cloud notes
* Screenshot for how to unpublish a note
* Fixed image path for unpublishing instructions
* Update publish_note.md
* Update publish_note.md
* Delete joplin_unpublish_note.png
Removed screenshot that wasn't needed anymore.
* Update readme/publish_note.md
Co-authored-by: Helmut K. C. Tessarek <tessarek@evermeet.cx>
Co-authored-by: Helmut K. C. Tessarek <tessarek@evermeet.cx>