ITS#8215 Some more slapmodify manpage tweaks

3 jobs for its8215 in 85 minutes and 35 seconds
Status Job ID Name Coverage
  Build
passed #4518
build-gnutls-mit-standalone-lloadd

00:44:25

passed #4516
build-no-threads-no-slapd

00:02:57

passed #4517
build-openssl-heimdal-lloadd

00:45:20