Fix issues, format files

Author: hulk0301

.gitignore

@@ -14,4 +14,4 @@ backend
 *.out
 
 # Dependency directories (remove the comment below to include it)
-# vendor/
+# vendor/

cmd/main.go

@@ -1,16 +1,16 @@
 package main
 
 import (
-  "fmt"
-  "log"
-  "net/http"
-  "github.com/hulk0301/example-app-backend/internal/router"
+	"fmt"
+	"github.com/hulk0301/example-app-backend/internal/router"
+	"log"
+	"net/http"
 )
 
 const port = 8080
 
 func main() {
-  http.HandleFunc("/", router.HandleRequest)
+	http.HandleFunc("/", router.HandleRequest)
 	log.Printf("Server listening on http://localhost:%d/", port)
-  log.Fatal(http.ListenAndServe(fmt.Sprintf(":%d", port) , nil))
+	log.Fatal(http.ListenAndServe(fmt.Sprintf(":%d", port), nil))
 }