rename field

main.go

@@ -3,16 +3,16 @@ package main
 import (
 	"astra-file-storage/config"
 	uuid2 "github.com/google/uuid"
+	"github.com/labstack/echo/v4"
 	"io"
 	"net/http"
 	"os"
 
-	"github.com/labstack/echo/v4"
 	"github.com/labstack/echo/v4/middleware"
 )
 
 type FileSuccess struct {
-	FileName string `json:"fileName"`
+	FileName string `json:"file_name"`
 }
 
 func upload(c echo.Context) error {