mhenrixon | Heredoc syntax highlighting

I used an image here to show properly what my editor displays because I am not sure how it displays in the browser.

# frozen_string_literal: true

@cars = @cars.where(<<~SQL.squish, free: free_text)
  regnr ILIKE :free
  OR carname ILIKE :free
  OR fuel ILIKE :free
  OR gearb ILIKE :free
  OR manufacturer ILIKE :free
SQL

<<~HTML.squish
  <div class="btn btn-primary btn-sm">
    Filter
  </div>
HTML

<<~CSS.squish
  .search-count {
    color: #888;
    font-style: italic;
  }
CSS