HPCC-11303 Document missing SOAPCALL options

Signed-off-by: JamesDeFabia <James.Defabia@LexisNexis.com>
HPCC-11303 Edits based upon code review

Signed-off-by: JamesDeFabia <James.Defabia@LexisNexis.com>
Merge pull request #6035 from JamesDeFabia/11303DocsSOAPCALL_Options

11303 Document missing SOAPCALL options

Reviewed-By: Richard Chapman <rchapman@hpccsystems.com>