Fix heroku production db setting
Fix heroku production db setting

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