Fix another go build

Author: earthboundkid

html/example_test.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build goexperiment.rangefunc
+//go:build go1.23
 
 // This example demonstrates parsing HTML data and walking the resulting tree.
 package html_test