Fix heading level of logging drivers
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.
@@ -742,17 +742,17 @@ familiar with using LXC directly.
You can specify a different logging driver for the container than for the daemon.
-### Logging driver: none
+#### Logging driver: none
Disables any logging for the container. `docker logs` won't be available with
this driver.
-### Log driver: json-file
+#### Logging driver: json-file
Default logging driver for Docker. Writes JSON messages to file. `docker logs`
command is available only for this logging driver
-## Logging driver: syslog
+#### Logging driver: syslog
Syslog logging driver for Docker. Writes log messages to syslog. `docker logs`
command is not available for this logging driver
