xbps_init: fix a typo when checking for the configuration file.
xbps_init: fix a typo when checking for the configuration file.

datenwolf/xbps,stpx/xbps,stpx/xbps,datenwolf/xbps,stpx/xbps,ebfe/xbps,ebfe/xbps,ebfe/xbps,datenwolf/xbps