Update versions in index.html title

Author: misode

index.html

@@ -42,7 +42,7 @@
 	</script>
 	<meta charset="utf-8">
 	<meta name="viewport" content="width=device-width, initial-scale=1.0">
-	<title>Data Pack Generators - Minecraft 1.18, 1.19, 1.20</title>
+	<title>Data Pack Generators - Minecraft 1.19, 1.20, 1.21</title>
 	<link rel="icon" href="/src/favicon-32.png" sizes="32x32">
 	<script async src="https://media.ethicalads.io/media/client/ethicalads.min.js"></script>
 	<script>