docs: added a note about server dynamic routes limitation (#21919)

docs/2.guide/2.directory-structure/1.server.md

@@ -56,6 +56,10 @@ export default defineEventHandler(() => 'Hello World!')
 
 Given the example above, the `/hello` route will be accessible at <http://localhost:3000/hello>.
 
+::alert{type=info icon=💡}
+Note that currently server routes do not support the full functionality of dynamic routes as [pages](https://nuxt.com/docs/guide/directory-structure/pages#dynamic-routes) do.
+::
+
 ## Server Middleware
 
 Nuxt will automatically read in any file in the `~/server/middleware` to create server middleware for your project.