dist/common/scripts/scylla_kernel_check: fix incorrect document URL
dist/common/scripts/scylla_kernel_check: fix incorrect document URL

Fixes #1871

Signed-off-by: Takuya ASADA <4ebfb6f510af412d6e89fefa3ab96d9c8b5e3fff@scylladb.com>
Message-Id: <1480327243-18177-1-git-send-email-4ebfb6f510af412d6e89fefa3ab96d9c8b5e3fff@scylladb.com>

avikivity/scylla,raphaelsc/scylla,avikivity/scylla,duarten/scylla,scylladb/scylla,duarten/scylla,scylladb/scylla,scylladb/scylla,scylladb/scylla,duarten/scylla,raphaelsc/scylla,avikivity/scylla,raphaelsc/scylla