doc: fix k.org links in CONTRIBUTING
doc: fix k.org links in CONTRIBUTING

Fix links for kernel.org code style document.

Signed-off-by: Andriy Berestovskyy <798b1fe0cbef4b7b0cf3305b8d22810e521b829b@cavium.com>
Reviewed-and-tested-by: Bill Fischofer <52f3c909d51cc5d355a68a403df6906b3c1a8f83@linaro.org>
Signed-off-by: Maxim Uvarov <db4d16e02ae2d7493db430203537da8b2e34f290@linaro.org>

dkrot/odp,dkrot/odp,dkrot/odp,dkrot/odp