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-rw-r--r--_plugins/proof.rb2
1 files changed, 2 insertions, 0 deletions
diff --git a/_plugins/proof.rb b/_plugins/proof.rb
index 0c2b63b..e1e3ab0 100644
--- a/_plugins/proof.rb
+++ b/_plugins/proof.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
module Jekyll
class ProofTagBlock < Liquid::Block
def render(context)