HPCC-12308 ECLPlus minor edits

Signed-off-by: Jim DeFabia <jamesdefabia@lexisnexis.com>
Merge pull request #6595 from JamesDeFabia/12308DocsECLPlusMinorEdit

HPCC-12308 ECLPlus minor edits

Reviewed-By: Richard Chapman <rchapman@hpccsystems.com>