Fix missing extensions on Procfile generation

Author: terracatta

lib/install/install.rb

@@ -47,7 +47,7 @@
   append_to_file "Procfile.dev", "css: #{bundler_run_cmd} build:css --watch\n"
 else
   say "Add default Procfile.dev"
-  copy_file "#{__dir__}/#{using_bun? ? "Procfile_for_bun" : "Procfile_for_node"}", "Procfile.dev"
+  copy_file "#{__dir__}/#{using_bun? ? "Procfile_for_bun.dev" : "Procfile_for_node.dev"}", "Procfile.dev"
 
   say "Ensure foreman is installed"
   run "gem install foreman"