Typo in ihm_model_representative example

[benmwebb]

One example for ihm_model_representative uses a selection_criteria of "medioid" but this is not a valid enumeration value (should be "medoid"):

    loop_
    _ihm_model_representative.id
    _ihm_model_representative.model_group_id
    _ihm_model_representative.model_id
    _ihm_model_representative.selection_criteria
     2  1  2  'medioid'

[benmwebb]

Also the "other" value for _ihm_model_representative.selection_criteria is given as other selction criteria, so there's a typo there too ("selction" not "selection").