specifying solely -query-ro ( read only queries ) does not allow to run the benchmark

[filipecosta90]

Sample error :

$ ./redisgraph-benchmark-go -query-ro "MATCH (n) RETURN n"
2023/03/17 13:40:17 redisgraph-benchmark-go (git_sha1:ee6d7f5b1d0b8adc8c2372eb125119766a088a01)
2023/03/17 13:40:17 RTS export disabled.
2023/03/17 13:40:17 You need to specify at least a query with the -query parameter. For example: -query="CREATE (n)"