Jared Carey 317866894e Fix systemd override example in configuring docs
When overriding a systemd configuration via a drop-in file, the
[Service] header is required. This commit adds this to an example
drop-in override in the configuring docs.

Relates #22038
2016-12-07 19:41:59 -05:00
..
2016-12-07 08:22:49 -05:00