訳し漏れの翻訳を追加

Author: shinmili

src/ch11-01-writing-tests.md

@@ -557,6 +557,8 @@ parameter, then we test this function using the `assert_eq!` macro.
 Let’s check that it passes!
 -->
 
+これが通ることを確認しましょう！
+
 ```console
 {{#include ../listings/ch11-writing-automated-tests/listing-11-07/output.txt}}
 ```