docs: add missing </script> tag (#2990)

docs/content/3.docs/2.directory-structure/10.pages.md

@@ -166,6 +166,7 @@ You might want to define metadata for each route in your app. You can do this us
 definePageMeta({
   title: 'My home page'
 })
+</script>
 ```
 
 This data can then be accessed throughout the rest of your app from the `route.meta` object.