drivers/md/faulty.c has been renamed to md-faulty.c after
following commit merged int to the main line.
935fe0983e .
But the file name in fault-injection.txt has not been changed.
Now the actual file name and document are in sync.
Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>