mention the name of log file

Reference: /n/sources/patch/applied/man-8-secstore-logfile
Date: Thu Jan  6 06:13:15 CET 2005

--- /sys/man/8/secstore	Thu Jan  6 06:13:15 2005
+++ /sys/man/8/secstore	Thu Jan  6 06:13:15 2005
@@ -58,6 +58,9 @@
 .br
 .B /lib/ndb/auth
 for mapping local userid to RADIUS userid
+.br
+.B /sys/log/secstore
+log file (secstored logs to /dev/cons if it does not exist)
 .SH SOURCE
 .B /sys/src/cmd/auth/secstore
 .SH SEE ALSO