Fix script command in a FAQ entry
In the FAQ section "How do I encode single pictures into movies?", use
-s for generating symbolic links with the ln command.
The script was generating hard links, which is not likely what it was
supposed to do.
Fix issue 2488.
Signed-off-by: Mans Rullgard <email@example.com>
(cherry picked from commit e063f5886b27a7374f5060b7c2c21385685b2cb0)