The official spelling of *Coturn* seems to be just with a capital
starting letter, replace all occurrences of *coTURN* with the command
below.
git grep -l coTURN | xargs sed -i 's/coTURN/Coturn/g'
As discussed in https://github.com/coturn/coturn/pull/478, if the
parameter only controls whether or not to send the software attribute
and not other production-relevant configurations, it should be named
accordingly.
The old --prod configuration option still works, but is now deprecated
and undocumented.
