diff --git a/README.md b/README.md
index b45a3ed..ecd06a3 100644
--- a/README.md
+++ b/README.md
@@ -304,7 +304,7 @@ This is my article.
 <!-- Space: TEST -->
 <!-- Title: Announcement -->
 
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+<!-- Macro: :box:([^:]+):([^:]*):(.+):
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