BAU: Updated missing welsh translation
BAU: Updated missing welsh translation

Updated a couple of missing welsh translations and made formatting more consistent (removed " and ' when not neccessary)

Authors: f9600b5ff3a88c39ec53387087f670df463910ce@rachelthecodesmith

alphagov/verify-frontend,alphagov/verify-frontend,alphagov/verify-frontend,alphagov/verify-frontend