kbuild: edit explanation of clean-files variable

Commit 976591810f (kbuild Update documentation of clean-files and clean-dirs)
changed the example for the clean-files variable, but left the explanation
unchanged. Edit the explanation to match the example.

Signed-off-by: Jeffrey Rogers <jeffreydavidrogers@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This commit is contained in:
Jeffrey Rogers 2015-06-06 17:18:45 -04:00 • committed by Jonathan Corbet
commit bd55daf48d