[SSSD] [sssd PR#1010][comment] man: in sssd-ipa clarified trusted domains section

[alexey-tikhonov]

URL: https://github.com/SSSD/sssd/pull/1010
Title: #1010: man: in sssd-ipa clarified trusted domains section

alexey-tikhonov commented:
"""
LGTM, but I will leave this to review for somebody with better English skill...

As a side note, I miss clarification where `subdomain_inherit` option should be used: in parent domain or in sub-domain? But perhaps this should be clarified in sssd.conf...
"""

See the full comment at https://github.com/SSSD/sssd/pull/1010#issuecomment-605869136