json date format to YYYY-MM-DD from 2001-09-10T21:00:00.000Z

i got this json file

    {    other arguments"releaseYear": "9/11/2001",     other arguments    },

the releaseYear argument is formmated like that in the front-end 2001-09-10T21:00:00.000Z and i want it be like that 2001-09-10 and i got an input type date and got the same formmat as the first one and want it be like YYYY-MM-DD

trying to fix this date formmat