Fix todo list item class might add in wrong element
Fix todo list item class might add in wrong element

jackycute/HackMD,hackmdio/hackmd,PeterDaveHello/hackmd,PeterDaveHello/hackmd,aswathyjacob8/newtest,Rwing/hackmd,Yukaii/hackmd,hackmdio/hackmd,aswathyjacob8/newtest,ironhack/hackmd,jackycute/HackMD,aswathyjacob8/newtest,ironhack/hackmd,Rwing/hackmd,Yukaii/hackmd,PeterDaveHello/hackmd,jackycute/HackMD,Yukaii/hackmd,hackmdio/hackmd,Rwing/hackmd,ironhack/hackmd