HPCC-9380 Document STD Library fileservices LogicalFileList param

Signed-off-by: RichardTaylorHPCC <richard.taylor@lexisnexis.com>
Merge pull request #4759 from RichardTaylorHPCC/B9380

HPCC-9380 Document STD Library fileservices LogicalFileList param

Reviewed-By: Richard Chapman <rchapman@hpccsystems.com>