HPCC-10685 Fix typo in ecl roxie detach section

Signed-off-by: JamesDeFabia <James.Defabia@LexisNexis.com>
Merge pull request #5321 from JamesDeFabia/10685_DocTypo_ecl_roxie_detach

HPCC-10685 doc typo ecl roxie detach

Reviewed-By: Richard Chapman <rchapman@hpccsystems.com>