2x2 LArCV workflow diagram missing (+Other misc. images no longer rendering)

[schwas3]

The original image is no longer render in the notebook basics/larcv/LArCV_filemaking_2x2.ipynb under heading 1.

(This was a source of confusion for me so I'm sure it would help others if this was corrected - granted that may be few if not no individuals)

@sindhu-ku

[schwas3]

Upon a little more searching, it seems like many of the images on the repo are no longer rendering (neither in browser nor on nersc via jupyter)