docs: add read more link (#5893)

Author: bot08

docs/content/2.guide/3.directory-structure/3.assets.md

@@ -15,3 +15,5 @@ The directory usually contains the following types of files:
 - Images that won't be served from the [`public/`](/guide/directory-structure/public) directory.
 
 If you want to serve assets from the server, we recommend taking a look at the [`public/`](/guide/directory-structure/public) directory.
+
+::ReadMore{link="/guide/features/assets"}