fix typo in ipc-json.c
fix typo in ipc-json.c

sleep-walker/sway,taiyu-len/sway,ascent12/sway,taiyu-len/sway,1ace/sway,mikkeloscar/sway,4e554c4c/sway,4e554c4c/sway,johalun/sway,ascent12/sway,1ace/sway,ascent12/sway,taiyu-len/sway,mikkeloscar/sway,ptMuta/sway,SirCmpwn/sway,sleep-walker/sway,1ace/sway