Changemetn du format de date, pour être lu par la librairie pandas

module2/exo4/Emails_par_jours.csv

-Year,Month,Day,Number of emails,Number that require answers
-2023,8,2,3,0
-2023,8,3,2,0
-2023,8,4,2,0
-2023,8,5,0,0
-2023,8,6,1,0
-2023,8,7,3,2
-2023,8,8,2,0
+Date,Number of emails,Number that require answers
+2023-08-02,3,0
+2023-08-03,2,0
+2023-08-04,2,0
+2023-08-05,0,0
+2023-08-06,1,0
+2023-08-07,3,2
+2023-08-08,2,0