Update Stripe config instructions in spree.rb initializer template

Specify they're for version >= 5.

Co-Authored-By: Alberto Vena <[email protected]>

core/lib/generators/solidus/install/templates/config/initializers/spree.rb.tt

@@ -33,19 +33,19 @@ Spree.config do |config|
  # Custom logo for the admin
  # config.admin_interface_logo = "logo/solidus.svg"
 
- # Gateway credentials can be configured statically here and referenced from
+ # Payment gateway credentials can be configured statically here and referenced from
  # the admin. They can also be fully configured from the admin.
  #
- # Please note that you need to use the solidus_stripe gem to have
- # Stripe working: https://github.com/solidusio-contrib/solidus_stripe
+ # Please note that the example below requires the `solidus_stripe` ~> 5.0 gem
+ # in order to work properly (see https://github.com/solidusio-contrib/solidus_stripe).
  #
  # config.static_model_preferences.add(
- # Spree::PaymentMethod::StripeCreditCard,
- # 'stripe_env_credentials',
- # secret_key: ENV['STRIPE_SECRET_KEY'],
- # publishable_key: ENV['STRIPE_PUBLISHABLE_KEY'],
- # server: Rails.env.production? ? 'production' : 'test',
- # test_mode: !Rails.env.production?
+ # 'SolidusStripe::PaymentMethod',
+ # 'solidus_stripe_env_credentials',
+ # api_key: ENV.fetch('SOLIDUS_STRIPE_API_KEY'),
+ # publishable_key: ENV.fetch('SOLIDUS_STRIPE_PUBLISHABLE_KEY'),
+ # test_mode: ENV.fetch('SOLIDUS_STRIPE_API_KEY').start_with?('sk_test_'),
+ # webhook_endpoint_signing_secret: ENV.fetch('SOLIDUS_STRIPE_WEBHOOK_SIGNING_SECRET')
  # )
 end