docs: fix nitro plugins link

Author: atinux

docs/content/4.api/4.advanced.md

@@ -10,7 +10,7 @@ Nuxt Content is highly customizable, giving you freedom and control over how the
 
 The module adds some hooks you can use:
 
-`content:file:*` hooks are available in nitro runtime, in order to use them you need to create a custom [nitro plugin](https://nitro.unjs.io/guide/plugins.html).
+`content:file:*` hooks are available in nitro runtime, in order to use them you need to create a custom [nitro plugin](https://nitro.unjs.io/guide/advanced/plugins).
 
 Create a plugin in the `server/plugins/` directory