Use the 'formatter' function to embed an <iframe> to display your file's content. Please try this code.
<th data-options="field:'documentoRepositorioFormRepositorio',width:250,
formatter: function(value,row){
var url = ...;
var s = '<iframe src=\''+url+'\' style=\'width:100%;height:100px\'></iframe>';
return s;
}"> Documento </th>