Fixed cosmetic typo in a function name.
Fixed cosmetic typo in a function name.

inveniosoftware/invenio-search,inveniosoftware/invenio-search,tiborsimko/invenio-records,inveniosoftware/invenio-records,tiborsimko/invenio-search,tiborsimko/invenio-records,tiborsimko/invenio-search,inveniosoftware/invenio-records