diff --git a/docs/en/unit/ir.md b/docs/en/unit/ir.md
index 55ff394e..4aa4e4b9 100644
--- a/docs/en/unit/ir.md
+++ b/docs/en/unit/ir.md
@@ -1,6 +1,6 @@
# Unit IR
-
+
***
diff --git a/docs/ja/unit/ir.md b/docs/ja/unit/ir.md
index ee6ad986..14b2dce9 100644
--- a/docs/ja/unit/ir.md
+++ b/docs/ja/unit/ir.md
@@ -1,6 +1,6 @@
# IR ユニット
-
+
***
diff --git a/docs/zh_CN/unit/ir.md b/docs/zh_CN/unit/ir.md
index a2d7b8e2..842dde8c 100644
--- a/docs/zh_CN/unit/ir.md
+++ b/docs/zh_CN/unit/ir.md
@@ -1,6 +1,6 @@
# IR - 红外对管
-
+
***