update docs example

docs/guide/examples/hooks_composed.rs

@@ -7,7 +7,7 @@ fn main() {}
 struct AppSettings {}
 
 // ANCHOR: wrap_context
-fn use_settings(cx: &ScopeState) -> UseSharedState<AppSettings> {
+fn use_settings(cx: &ScopeState) -> &UseSharedState<AppSettings> {
     use_shared_state::<AppSettings>(cx).expect("App settings not provided")
 }
 // ANCHOR_END: wrap_context