HPCC-10213 Document PERSIST options

Signed-off-by: JamesDeFabia <James.Defabia@LexisNexis.com>
HPCC-10213 Edits based upon review feedback

Signed-off-by: JamesDeFabia <James.Defabia@LexisNexis.com>
Merge pull request #5688 from JamesDeFabia/HPCC10213DocumentPersistOptions

HPCC-10213 Document PERSIST options

Reviewed-by: Gavin Halliday <ghalliday@hpccsystems.com>