Fix docs issue

Author: JamesFreeman

docs/credential-storage.md

@@ -29,8 +29,9 @@ For the package to know which model you want to use, you will need to call the f
 
 ```php
 use Webfox\Xero\Xero;
+use App\Models\User;
 
-Xero::useModelStore(User::find(Auth::user()->id));
+Xero::useModelStore(User::find(1));
 ```
 
 By default, the package will use the `xero_credentials` field, Should you need to rename this field, you can do so by calling: