diff --git a/docs/docs/internals/syntax.md b/docs/docs/internals/syntax.md
index 4ecefb4bdb83..9b27a8be9384 100644
--- a/docs/docs/internals/syntax.md
+++ b/docs/docs/internals/syntax.md
@@ -103,6 +103,7 @@ a `:` at the end of a line.
                 |  indent ts outdent
 :<<< ts >>>   ::=  [nl] ‘{’ ts ‘}’
                 |  `:` indent ts outdent
+```
 
 ## Keywords