clarify sentence with manually preloading

Co-authored-by: Eric L. Goldstein <3359116+mangs@users.noreply.github.com>

Author: atilafassina

src/routes/reference/component-apis/lazy.mdx

@@ -3,7 +3,7 @@ title: lazy
 ---
 
 Used to lazy load components to allow for code splitting. 
-Components are not loaded until rendered. 
+Components are not loaded until rendered or manually preloaded. 
 
 ```tsx title="app.tsx"
 import { lazy } from "solid-js"