Fix hour format of DateFormat.JsonFormat
Fix hour format of DateFormat.JsonFormat

Fixes #1183

StefanoRaggi/Lean,QuantConnect/Lean,JKarathiya/Lean,jameschch/Lean,jameschch/Lean,AnshulYADAV007/Lean,Jay-Jay-D/LeanSTP,Jay-Jay-D/LeanSTP,AlexCatarino/Lean,kaffeebrauer/Lean,AnshulYADAV007/Lean,AlexCatarino/Lean,jameschch/Lean,redmeros/Lean,Jay-Jay-D/LeanSTP,redmeros/Lean,JKarathiya/Lean,andrewhart098/Lean,StefanoRaggi/Lean,StefanoRaggi/Lean,QuantConnect/Lean,JKarathiya/Lean,QuantConnect/Lean,andrewhart098/Lean,kaffeebrauer/Lean,andrewhart098/Lean,Jay-Jay-D/LeanSTP,AnshulYADAV007/Lean,kaffeebrauer/Lean,QuantConnect/Lean,redmeros/Lean,StefanoRaggi/Lean,AlexCatarino/Lean,kaffeebrauer/Lean,AlexCatarino/Lean,StefanoRaggi/Lean,Jay-Jay-D/LeanSTP,jameschch/Lean,andrewhart098/Lean,JKarathiya/Lean,AnshulYADAV007/Lean,kaffeebrauer/Lean,jameschch/Lean,redmeros/Lean,AnshulYADAV007/Lean