```ruby
# frozen_string_literal: true

module ActionController
  module TemplateAssertions
    def assert_template(options = {}, message = nil)
      raise NoMethodError,
        "assert_template has been extracted to a gem. To continue using it,
        add `gem 'rails-controller-testing'` to your Gemfile."
    end
  end
end
```

Remove compatibility module from docs
user
```ruby
# frozen_string_literal: true

module ActionController
  module TemplateAssertions # :nodoc:
    def assert_template(options = {}, message = nil)
      raise NoMethodError,
        "assert_template has been extracted to a gem. To continue using it,
        add `gem 'rails-controller-testing'` to your Gemfile."
    end
  end
end
```
assistant