docs: add note on the downside about using terms lookup and other queries that fetch data as part of query parsing in the percolator.
docs: add note on the downside about using terms lookup and other queries that fetch data as part of query parsing in the percolator.

strapdata/elassandra-test,strapdata/elassandra-test,strapdata/elassandra-test,strapdata/elassandra-test,strapdata/elassandra-test,strapdata/elassandra-test,strapdata/elassandra-test