Update db-xrefs.yaml
Update db-xrefs.yaml

Proposed  fix for #152.
geneontology/go-site,geneontology/go-site,hattrill/go-site,hattrill/go-site,geneontology/go-site,geneontology/go-site,hattrill/go-site,hattrill/go-site,hattrill/go-site,geneontology/go-site