Preload turbo in importmap.rb (to fix CSS?)

Author: veganstraightedge

Diff for: config/importmap.rb

@@ -10,6 +10,6 @@
 # Hotwired JS https://hotwired.dev
 pin '@hotwired/stimulus',         to: 'stimulus.min.js',     preload: true
 pin '@hotwired/stimulus-loading', to: 'stimulus-loading.js', preload: true
-pin '@hotwired/turbo-rails',      to: 'turbo.min.js'
+pin '@hotwired/turbo-rails',      to: 'turbo.min.js',        preload: true
 
 pin_all_from 'app/javascript/controllers', under: 'controllers'