Fixed typo in README.textile (#26168)
Fixed typo in README.textile (#26168)

The attribute name was camelCase in the text but in the example it was snake_case.
vroyer/elassandra,vroyer/elasticassandra,vroyer/elasticassandra,strapdata/elassandra,vroyer/elassandra,vroyer/elassandra,strapdata/elassandra,strapdata/elassandra,strapdata/elassandra,vroyer/elasticassandra,strapdata/elassandra