Fix Collection.json iiif.archivelab.org/iiif/collection.json metadata
Description
As per Ed's suggestions: https://groups.google.com/d/msg/iiif-discuss/US2tKBn2Wno/c3VZd9zmBAAJ
Environment
None
As per Ed's suggestions: https://groups.google.com/d/msg/iiif-discuss/US2tKBn2Wno/c3VZd9zmBAAJ
