HPCC-9367 Add wait option ecl roxie check docs (Client Tools)

Signed-off-by: JamesDeFabia <James.Defabia@LexisNexis.com>
Merge pull request #4474 from JamesDeFabia/9367_ecl_roxie_check_add_wait_option_toDocs

HPCC-9367 Add wait option ecl roxie check docs (Client Tools)

Reviewed-By: Richard Chapman <rchapman@hpccsystems.com>