doc: collab: coding style: update checkpatch pre-commit line

Update pre-commit checkpatch script to use project .checkpatch.conf
file.

Change-Id: I86ef9c64e9a13db2fd79fc5781eaa5456be78f36
Signed-off-by: Javier B Perez Hernandez <javier.b.perez.hernandez@linux.intel.com>
1 file changed