Bug 21625: Fix wording and typo in SMSSendDriver system preference description
SMSSendDriver was missing an S.
Koha is sending not receiving messages, so I think switching
that will be a little more clear.
To test:
Verify that the system preference description reads correctly.
Signed-off-by: Andreas Roussos <arouss1980@gmail.com> Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org> Signed-off-by: Nick Clemens <nick@bywatersolutions.com>