Merge pull request rails#52524 from rubys/rm-redundant-comment

remove redundant comment

Author: rafaelfranca

railties/lib/rails/generators/rails/app/templates/Dockerfile.tt

@@ -7,8 +7,6 @@
 
 # For a containerized dev environment, see Dev Containers: https://guides.rubyonrails.org/getting_started_with_devcontainer.html
 
-# For a containerized dev environment, see Dev Containers: https://guides.rubyonrails.org/getting_started_with_devcontainer.html
-
 # Make sure RUBY_VERSION matches the Ruby version in .ruby-version
 ARG RUBY_VERSION=<%= gem_ruby_version %>
 FROM docker.io/library/ruby:$RUBY_VERSION-slim AS base