Fix typo in RC_UNAME check of modules-load
Fix typo in RC_UNAME check of modules-load

The $RC_UNAME "Linux" had been misspelled as "linux".
As a consequence, entries in e.g. /etc/modules-load.d failed to
load any module succesfully under Linux(!)

OpenRC/openrc,dwfreed/openrc,OpenRC/openrc,OpenRC/openrc,dwfreed/openrc,dwfreed/openrc,williamh/openrc,williamh/openrc,williamh/openrc