Correct error when there is a relationship for included document with unknown type#126

danivek merged 1 commit intodanivek:masterdanivek/json-api-serializer:masterfrom

max-konin:bugfix/correct-error-when-no-type-registered-for-relationship-of-included-docmax-konin/json-api-serializer:bugfix/correct-error-when-no-type-registered-for-relationship-of-included-docCopy head branch name to clipboard