MAN: Improve description of 'trusted domain section' in sssd.conf's man page
PR generated to include explaination for ipa ad trust sssd configuration
where ad has a child domain. Explanation is added to 'TRUSTED DOMAIN
SECTION'. Also an example is included to better understanding.
Resolves: https://pagure.io/SSSD/sssd/issue/3399
Reviewed-by: Fabiano FidĂȘncio <fidencio@redhat.com>
Reviewed-by: Jakub Hrozek <jhrozek@redhat.com>