docs: warn about usage of Provider inside Suspense (#1142)

* docs: warn about usage of `Provider` not containing `Suspense`

* docs: add note about what could happen if `Provider` contains no `Suspense`

docs/basics/async.mdx

@@ -11,7 +11,8 @@ Async support is first class in jotai. It fully leverages React Suspense.
 ## Suspense
 
 To use async atoms, you need to wrap your component tree with `<Suspense>`.
-If you have `<Provider>`, place at least one `<Suspense>` inside the `<Provider>`.
+
+> If you have a `<Provider>`, place **at least one** `<Suspense>` inside said `<Provider>`; otherwise, it may cause an endless loop while rendering the components.
 
 ```jsx
 const App = () => (