Add code language to the example

site/content/docs/02-template-syntax.md

@@ -606,7 +606,7 @@ On `<input>` elements with `type="file"`, you can use `bind:files` to get the [`
 
 `bind:` can be used together with `on:` directives. The order that they are defined in determines the value of the bound variable when the event handler is called.
 
-```
+```sv
 <script>
 	let value = 'Hello World';
 </script>