Merge pull request rails#55391 from northeastprince/and-and

Fix typo in comment [skip ci]

Author: Edouard-chin

railties/lib/rails/generators/rails/app/templates/config/ci.rb.tt

@@ -25,7 +25,7 @@ CI.run do
   step "Tests: Seeds", "env RAILS_ENV=test bin/rails db:seed:replant"
 
   # Optional: set a green GitHub commit status to unblock PR merge.
-  # Requires the `gh` CLI and and `gh extension install basecamp/gh-signoff`.
+  # Requires the `gh` CLI and `gh extension install basecamp/gh-signoff`.
   # if success?
   #   step "Signoff: All systems go. Ready for merge and deploy.", "gh signoff"
   # else