Mention success first in json_load_callback_t docs
Mention success first in json_load_callback_t docs

akheron/jansson,bstarynk/jansson,firepick-delta/FireSight,Mephistophiles/jansson,rogerz/jansson,firepick1/jansson,liu3tao/jansson,Mephistophiles/jansson,markalanj/jansson,rogerz/jansson,attie/jansson,rogerz/jansson,Vorne/jansson,chrullrich/jansson,firepick1/jansson,wirebirdlabs/featherweight-jansson,firepick1/FireSight,bstarynk/jansson,simonfojtu/FireSight,firepick-delta/FireSight,firepick1/jansson,wirebirdlabs/featherweight-jansson,OlehKulykov/jansson,firepick1/FireSight,rogerz/jansson,OlehKulykov/jansson,AmesianX/jansson,npmccallum/jansson,npmccallum/jansson,bstarynk/jansson,markalanj/jansson,simonfojtu/FireSight,akheron/jansson,slackner/jansson,AmesianX/jansson,Vorne/jansson,chrullrich/jansson,slackner/jansson,firepick1/FireSight,simonfojtu/FireSight,markalanj/jansson,akheron/jansson,attie/jansson,firepick-delta/FireSight,liu3tao/jansson