Update slide-example.md
Update slide-example.md

xnum/hackmd,Rory80Hz/hackmd,PeterDaveHello/hackmd,Rwing/hackmd,Rory80Hz/hackmd,PeterDaveHello/hackmd,ironhack/hackmd,Rwing/hackmd,hackmdio/hackmd,Rwing/hackmd,ironhack/hackmd,jccrofty30/hackmd,jackycute/HackMD,hackmdio/hackmd,aswathyjacob8/newtest,jackycute/HackMD,PeterDaveHello/hackmd,jccrofty30/hackmd,Yukaii/hackmd,Rory80Hz/hackmd,Yukaii/hackmd,jackycute/HackMD,Yukaii/hackmd,aswathyjacob8/newtest,xnum/hackmd,jccrofty30/hackmd,aswathyjacob8/newtest,hackmdio/hackmd,ironhack/hackmd,xnum/hackmd