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-rw-r--r--guides/rails_guides/markdown.rb2
1 files changed, 2 insertions, 0 deletions
diff --git a/guides/rails_guides/markdown.rb b/guides/rails_guides/markdown.rb
index 02d58601c4..84f95eec68 100644
--- a/guides/rails_guides/markdown.rb
+++ b/guides/rails_guides/markdown.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
require "redcarpet"
require "nokogiri"
require "rails_guides/markdown/renderer"