examples: replace all app.Run(iris.Addr(...)) with app.Listen just for the shake of simplicity, both are doing the same exact thing as it's described on the http listening first example.

Former-commit-id: d20afb2e899aee658a8e0ed1693357798df93462

_examples/i18n/main.go

@@ -85,5 +85,5 @@ func main() {
 	// or http://localhost:8080/other?lang=en-US
 	//
 	// or use cookies to set the language.
-	app.Run(iris.Addr(":8080"), iris.WithSitemap("http://localhost:8080"))
+	app.Listen(":8080", iris.WithSitemap("http://localhost:8080"))
 }