Minor improvements to translog docs (#28237)
Minor improvements to translog docs (#28237)

The use of the phrase "translog" vs "transaction log" was inconsistent, and
it was apparently unclear that the translog was stored on every shard copy.

vroyer/elasticassandra,strapdata/elassandra,strapdata/elassandra,vroyer/elassandra,strapdata/elassandra,vroyer/elasticassandra,vroyer/elassandra,strapdata/elassandra,vroyer/elassandra,vroyer/elasticassandra,strapdata/elassandra