docs(site): add expo-document-picker + expo-image-picker to Expo install guide

The package README was updated in d7aad2e but the VitePress docs site at
docs/guide/expo.md is the page actually rendered to users (the bash
snippet in the screenshot included "From inside your Expo app (not the
monorepo root)" which only lives here, not in the package README).
Update the install snippet and the Minimum versions table so the public
docs match what package.json declares as required peers.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: Ripwords

docs/guide/expo.md

@@ -13,7 +13,8 @@
 npx expo install @reprojs/expo \
   react-native-view-shot react-native-svg react-native-gesture-handler \
   @react-native-async-storage/async-storage @react-native-community/netinfo \
-  expo-device expo-constants
+  expo-device expo-constants \
+  expo-document-picker expo-image-picker
 ```
 
 `expo install` picks versions matching your Expo SDK channel.
@@ -32,6 +33,8 @@ npx expo install @reprojs/expo \
 | `@react-native-community/netinfo` | 11.3 |
 | `expo-device` | 6 |
 | `expo-constants` | 16 |
+| `expo-document-picker` | any (matches your Expo SDK) |
+| `expo-image-picker` | any (matches your Expo SDK) |
 
 ## Add the config plugin