HPCC-11912 DOCS:Roxie now supports superfile with >1 subfile

Signed-off-by: Jim DeFabia <jamesdefabia@lexisnexis.com>
Merge branch 'closedown-5.0.x' of https://github.com/hpcc-systems/HPCC-Platform into 11912DOCSRoxieSuperWithMoreThan1sub
HPCC-11912 Docs Roxie superfile support updates

Signed-off-by: Jim DeFabia <jamesdefabia@lexisnexis.com>
Merge pull request #6237 from JamesDeFabia/11912DOCSRoxieSuperWithMoreThan1sub

HPCC-11912 DOCS:Roxie now supports superfile with >1 subfile

Reviewed-By: Richard Chapman <rchapman@hpccsystems.com>