some mandoc fixes

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@9062 ec53bebd-3082-4978-b11e-865c3cabbd6b

kadmin/kadmin.8

@@ -30,7 +30,7 @@ Kerberos administration utility
 .Op Fl l | Fl -local
 .Op Fl h | Fl -help
 .Op Fl v | Fl -version
-.Ar [command]
+.Op Ar command
 .Sh DESCRIPTION
 The
 .Nm
@@ -190,7 +190,7 @@ When running in local mode, the following commands can also be used.
 .Bd -ragged -offset indent
 .Nm dump
 .Op Fl d | Fl -decrypt
-.Ar [dump-file]
+.Op Ar dump-file
 .Pp
 .Bd -filled -offset indent
 writes the database in