Syslog was a heading-2, but should be heading-3;
changed the headings to heading-4 to match the
"network settings" section.
Also changed "Log driver" to "logging driver" for JSON.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Upstream-commit: f855d5dde70f1f3e4390e53576a3ca9b5a9db8ba
Component: engine