Fixed UO summation error
Fixed UO summation error

Kdigo_uo on Bigquery has an error in UrineOutput_6hr, UrineOutput_12hr and UrineOutput_24hr.
It is supposed to be a sum of the last 6,12,24 hours, but is a summation of the next 6,12 24 hours.

MIT-LCP/mimic-code,MIT-LCP/mimic-code,MIT-LCP/mimic-code