stream load ????json????????

[Anonymity?9?2]

??????????????????doris??stream 
load????json????????????????????????????????????????????????????????json 
object????????????????????????
Reason: Parse json data for JsonDoc failed. code = 2, error-info:The document 
root must not be followed by other values.. 
doris????????json????????????????????????????json array??????????-H 
"strip_outer_array: true"???? ??????????????????????????????