Fix up upgrading guide

Author: lizkenyon

docs/Upgrading.md

@@ -8,6 +8,8 @@ This file documents important changes needed to upgrade your app's Shopify App v
 
 [Unreleased](#unreleased)
 
+[Upgrading to `v23.0.0`](#upgrading-to-v2300)
+
 [Upgrading to `v22.2.0`](#upgrading-to-v2220)
 
 [Upgrading to `v22.0.0`](#upgrading-to-v2200)
@@ -54,14 +56,14 @@ Additionally, ActiveJob classes have been moved from `lib/shopify_app/jobs/` to
 
 ##### Why this change was made
 
-Rails 7.1+ improved autoloading behavior (via Zeitwerk) now properly handles jobs in the `app/jobs/` directory, loading them lazily when needed rather than eagerly during initialization.
+Rails 7.1+'s improved autoloading behavior (via Zeitwerk) properly handles jobs in the `app/jobs/` directory, loading them lazily when needed rather than eagerly during initialization.
 
 ##### Migration steps
 
 **For most apps**: No changes needed. The jobs are internal to the gem and will be autoloaded correctly by Rails.
 
 **If your app has custom ActiveJob serializers that reference these jobs**:
-1. Ensure you're on Rails 7.1+ before upgrading. [Rails 7.1 Upgrade Guide](https://guides.rubyonrails.org/upgrading_ruby_on_rails.html#upgrading-from-rails-7-0-to-rails-7-1))
+1. Ensure you're on Rails 7.1+ before upgrading. [Rails 7.1 Upgrade Guide](https://guides.rubyonrails.org/upgrading_ruby_on_rails.html#upgrading-from-rails-7-0-to-rails-7-1)
 2. Coordinate deployment timing with apps that have custom serializers
 3. Custom serializers will now register before jobs are loaded (correct timing)
 
@@ -76,8 +78,7 @@ require 'shopify_app/jobs/webhooks_manager_job'
 
 ##### Additional dependency changes
 
-- **SQLite**: Development dependency updated from `~> 1.4` to `2.x`
-- **Ruby 3.4+**: New development dependencies added: `csv`, `mutex_m` (removed from Ruby 3.4 stdlib)
+- **sprockets-rails**: Now a required runtime dependency. Most Rails apps already include this, but if your app uses an alternative asset pipeline (e.g., Propshaft), you may need to add `sprockets-rails` to your Gemfile.
 
 #### (v23.0.0) - Deprecated methods in CallbackController
 The following methods from `ShopifyApp::CallbackController` have been deprecated in `v23.0.0`