reference: follow idiom in code snippet

diff --git a/src/doc/reference.md b/src/doc/reference.md
index 83849574260e1ff93034292314a991f962be5935..e8ac474b07eafc3de13c7101982e0068aaccc063 100644 (file)
--- a/src/doc/reference.md
+++ b/src/doc/reference.md
@@ -921,7 +921,7 @@ An example of a function:
 
 ```
 fn add(x: i32, y: i32) -> i32 {
-    return x + y;
+    x + y
 }
 ```