Merge pull request rails#55096 from thehale/docs_import_maps

[skip ci] Include Action Text pins in Import Maps section

Author: guilleiguaran

guides/source/getting_started.md

@@ -2533,6 +2533,8 @@ pin "@hotwired/turbo-rails", to: "turbo.min.js"
 pin "@hotwired/stimulus", to: "stimulus.min.js"
 pin "@hotwired/stimulus-loading", to: "stimulus-loading.js"
 pin_all_from "app/javascript/controllers", under: "controllers"
+pin "trix"
+pin "@rails/actiontext", to: "actiontext.esm.js"
 ```
 
 TIP: Each pin maps a JavaScript package name (e.g., `"@hotwired/turbo-rails"`)