Change CSV header from 'submission' to 'model'

The header of the CSV file was updated from 'submission' to 'model'.

Author: subawocit

assets/data/Track2_scores_all.csv

@@ -1,4 +1,4 @@
-submission,score_C_0005,id,team
+model,score,id,team
 368923_HCMUS_TheFangs,0.1516907875507338,368923,HCMUS_TheFangs
 368751_HCMUS_TheFangs,0.1506979457288214,368751,HCMUS_TheFangs
 368967_HCMUS_TheFangs,0.1469933789113671,368967,HCMUS_TheFangs
@@ -164,3 +164,4 @@ submission,score_C_0005,id,team
 365561_sazeglio,0.1087947776987352,365561,sazeglio
 368043_sazeglio,0.1075372084316862,368043,sazeglio
 
+