add type to make collection in test valid#292

OyvindLGjesdal wants to merge 1 commit intoiiif-prezi:mainiiif-prezi/iiif-prezi3:mainfrom

OyvindLGjesdal:create-valid-collection-manifest-with-refOyvindLGjesdal/iiif-prezi3:create-valid-collection-manifest-with-refCopy head branch name to clipboard