Correct docs re: kpropd usage w/ iprop

https://github.com/krb5/krb5/commit/4a50490ed48050e7a6d061553a6b610dc979aa2b
Author: Nicolas Williams <nico@cryptonector.com>
Committer: Greg Hudson <ghudson@mit.edu>
Commit: 4a50490ed48050e7a6d061553a6b610dc979aa2b
Branch: master
 .../krb_admins/admin_commands/kpropd.rst           |   11 ++++++-----
 doc/rst_source/krb_admins/install_kdc.rst          |    4 ++--
 2 files changed, 8 insertions(+), 7 deletions(-)