Make sure a user-supplied NTP server gets setup properly

Edit;

```cat /etc/chrony.conf ```
```
# Use public servers from the pool.ntp.org project.
# Please consider joining the pool (https://www.pool.ntp.org/join.html).
#pool 2.almalinux.pool.ntp.org iburst
server ntp.example.com
```

If changed, restart ```chronyd.service```.