Fix quandl data source
Fix quandl data source

AlexCatarino/Lean,QuantConnect/Lean,JKarathiya/Lean,jameschch/Lean,AlexCatarino/Lean,AlexCatarino/Lean,QuantConnect/Lean,JKarathiya/Lean,QuantConnect/Lean,StefanoRaggi/Lean,StefanoRaggi/Lean,JKarathiya/Lean,jameschch/Lean,StefanoRaggi/Lean,StefanoRaggi/Lean,StefanoRaggi/Lean,QuantConnect/Lean,JKarathiya/Lean,jameschch/Lean,jameschch/Lean,jameschch/Lean,AlexCatarino/Lean