Fix image rendering for zenodo link
Fix image rendering for zenodo link

[ci skip]

mikelum/pyspeckit,keflavich/pyspeckit,low-sky/pyspeckit,e-koch/pyspeckit,bsipocz/pyspeckit,pyspeckit/pyspeckit,vlas-sokolov/pyspeckit,jpinedaf/pyspeckit,vlas-sokolov/pyspeckit,dinossimpson/pyspeckit,e-koch/pyspeckit,jpinedaf/pyspeckit,allisony/pyspeckit,low-sky/pyspeckit,mikelum/pyspeckit,allisony/pyspeckit,bsipocz/pyspeckit,keflavich/pyspeckit,pyspeckit/pyspeckit,dinossimpson/pyspeckit