diff --git a/doc/design/parallel_do.md b/doc/design/parallel_do.md
index 5b90b507920d5901ef35775b95b587aa6fd4badc..d51b1014d4abbc1e363b2ef854535a8fb6d0174b 100644
--- a/doc/design/parallel_do.md
+++ b/doc/design/parallel_do.md
@@ -159,5 +159,3 @@ block3 {
 }
 }
 ```
-
-