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-rw-r--r--guides/rails_guides/markdown/renderer.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/guides/rails_guides/markdown/renderer.rb b/guides/rails_guides/markdown/renderer.rb
index 7ac3d417a4..583a8d348f 100644
--- a/guides/rails_guides/markdown/renderer.rb
+++ b/guides/rails_guides/markdown/renderer.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
module RailsGuides
class Markdown
class Renderer < Redcarpet::Render::HTML