Leandro Silva 5e00217784 Fix TimeoutStartSec invalid parsing in moonfire-nvr.service Systemd config
Systemd syntax expects comment in a single line, hence the parsing failure
https://www.freedesktop.org/software/systemd/man/latest/systemd.syntax.html

Before;
```
[leandro@nuc ~]$ sudo systemd-analyze verify /etc/systemd/system/moonfire-nvr.service
/etc/systemd/system/moonfire-nvr.service:16: Failed to parse TimeoutStartSec= parameter, ignoring: 300 # large installations take a while to scan the sample file dirs
[leandro@nuc ~]$
```

After;
```
[leandro@nuc ~]$ sudo systemd-analyze verify /etc/systemd/system/moonfire-nvr.service
[leandro@nuc ~]$
```
2023-10-23 20:18:50 -07:00
..
2023-10-18 21:55:47 -07:00
2023-10-18 21:55:47 -07:00
2023-10-18 21:55:47 -07:00
2023-10-18 21:55:47 -07:00

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