check "redundant" fields

I see that God Says Through Those Who Are His: GF 263-267 has "No" with a capital letter in the "redundant" metadata field, but we should be using lower case. This trips up metadata searches. We should check for No and Yes in our corpora before publishing again. https://annis.copticscriptorium.org/annis/?id=53ad3730-1de8-45b9-ab48-270cdb0fd0b4