Fix table rendering in Sparql reference docs.
Fix table rendering in Sparql reference docs.

krlohnes/tinkerpop,apache/tinkerpop,apache/tinkerpop,apache/tinkerpop,apache/incubator-tinkerpop,apache/tinkerpop,krlohnes/tinkerpop,pluradj/incubator-tinkerpop,krlohnes/tinkerpop,pluradj/incubator-tinkerpop,apache/tinkerpop,robertdale/tinkerpop,robertdale/tinkerpop,apache/tinkerpop,robertdale/tinkerpop,pluradj/incubator-tinkerpop,krlohnes/tinkerpop,robertdale/tinkerpop,krlohnes/tinkerpop,robertdale/tinkerpop,apache/incubator-tinkerpop,apache/tinkerpop,apache/incubator-tinkerpop