change the main.go place

cmd/hello-world/main.go

@@ -1,37 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"html/template"
-	"net/http"
-)
-
-const portNumber = ":8080"
-
-// Home is the about page handler
-func Home(w http.ResponseWriter, r *http.Request) {
-	renderTemplate(w, "home.page.tmpl")
-}
-
-// About is the about page handler
-func About(w http.ResponseWriter, r *http.Request) {
-	renderTemplate(w, "about.page.tmpl")
-}
-
-func renderTemplate(w http.ResponseWriter, tmpl string) {
-	parsedTemplate, _ := template.ParseFiles("../..//templates/" + tmpl)
-	err := parsedTemplate.Execute(w, nil)
-	if err != nil {
-		fmt.Println("error parsing template:", err)
-	}
-}
-
-// main is the main application function
-func main() {
-	http.HandleFunc("/", Home)
-	http.HandleFunc("/about", About)
-
-	fmt.Printf("Starting application on port %s\n", portNumber)
-
-	_ = http.ListenAndServe(portNumber, nil)
-}