doc: Add reloadPageOnShallowFalseUpdates docs

Author: franky47

packages/docs/content/docs/adapters.mdx

@@ -86,6 +86,25 @@ createRoot(document.getElementById('root')!).render(
 )
 ```
 
+Note: because there is no known server in this configuration, options
+like [`shallow: false{:ts}`](./options#shallow) will have no effect.
+
+Since `nuqs@2.4.0`, you can specify a flag to perform a full-page navigation when
+updating query state configured with `shallow: false{:ts}`, to notify the web server
+that the URL state has changed, if it needs it for server-side rendering other
+parts of the application than the static React bundle:
+
+```tsx title="src/main.tsx" /reloadPageOnShallowFalseUpdates/
+createRoot(document.getElementById('root')!).render(
+  <NuqsAdapter reloadPageOnShallowFalseUpdates>
+    <App />
+  </NuqsAdapter>
+)
+```
+
+This may be useful for servers not written in JavaScript, like Django (Python),
+Rails (Ruby), Laravel (PHP), Phoenix (Elixir) etc...
+
 ## Remix
 
 ```tsx title="app/root.tsx"