Update hooks.md documentation (#2687)

The documentation of getProducts hook was outdated.

If you agree, I'd also add more comprehensive documentation when it
comes to handling errors. I was getting an empty products list and
without adding the `.catch` statement to the `getProducts` and seeing
that I was missing the `skus` property, I couldn't figure it out. I
think it should be clear from the documentation that `getProducts`
returns a promise.

docs/docs/api-reference/hooks.md

@@ -62,7 +62,7 @@ const App = () => {
     <>
       <Button
         title="Get the products"
-        onPress={getProducts(['com.example.consumable'])}
+        onPress={getProducts({ skus: ['product.id'] })}
       />
 
       {products.map((product) => (