update code for go version 1.24

_examples/view/template_html_1/main.go

@@ -1,6 +1,8 @@
 package main
 
 import (
+	"fmt"
+
 	"github.com/kataras/iris/v12"
 )
 
@@ -19,7 +21,7 @@ func main() {
 		ctx.CompressWriter(true)
 		ctx.ViewData("", mypage{"My Page title", "Hello world!"})
 		if err := ctx.View("mypage.html"); err != nil {
-			ctx.HTML("<h3>%s</h3>", err.Error())
+			ctx.HTML(fmt.Sprintf("<h3>%s</h3>", err.Error()))
 			return
 		}
 		// Note that: you can pass "layout" : "otherLayout.html" to bypass the config's Layout property