Idea for short story: time-traveler attempts to prevent the Holocaust

Basically title.

After altering some key events that lead to the Holocaust, the time-traveler returns to the present and immediately searches the Internet to check whether he was successful.

He stares at the screen, which shows that the Holocaust happened and that six million Jews were killed.

He sighs with relief. Only six million. The Jewish people still exist. Mission accomplished; עם ישראל חי.