diff --git a/src/doc/style-guide/src/items.md b/src/doc/style-guide/src/items.md
index 1e7a88065b5e..6e5ea335e6ab 100644
--- a/src/doc/style-guide/src/items.md
+++ b/src/doc/style-guide/src/items.md
@@ -369,7 +369,8 @@ where
         + Index<RangeTo<Idx>, Output = Self::Output>
         + Index<RangeFrom<Idx>, Output = Self::Output>
         + Index<RangeInclusive<Idx>, Output = Self::Output>
-        + Index<RangeToInclusive<Idx>, Output = Self::Output> + Index<RangeFull>,
+        + Index<RangeToInclusive<Idx>, Output = Self::Output>
+        + Index<RangeFull>,
 ```
 
 ### Type aliases