man file doesn't get updated with custom config file location

[TurtleWilly]

The installed man file reports:

…
RHash looks for a config file at $XDG_CONFIG_HOME/rhash/rhashrc,
$HOME/.config/rhash/rhashrc, $XDG_CONFIG_DIRS/rhash/rhashrc,
$HOME/.rhashrc and /etc/rhashrc.
…

But I configured and build rhash with ./configure --sysconfdir=/usr/local/etc/rhash …, so instead checking "/etc/rhashrc" it now checks "/usr/local/etc/rhash/rhashrc" (I have a schema where I only have directories in /usr/local/etc, because I dislike random file clutter). The installed man file properly should inject the actually configured/ used path.

Note: Even if I had not used --sysconfdir it would have used "/usr/local/etc" and not the system "/etc", I believe, so "/etc/rhashrc" probably was wrong in any way.