For those of us who are wondering if this can be tricky, I just want
to testify you just have to follow Fedora instruction[1] and restart
the machine. No issues at all and Fedora will be upgraded to 23.
You need to wait a little bit (~ 5-10 mn) after you run
# dnf system-upgrade reboot
for the system to install the new downloaded packages.
[
1]https://fedoramagazine.org/upgrading-from-fedora-22-to-fedora-23/
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