idevicesyslog: Use --syslog-relay in description and man page

Both --syslog-relay and --syslog_relay still work regardless, but
it is more aligned with other long options.

1 files changed, 1 insertions, 1 deletions

diff --git a/tools/idevicesyslog.c b/tools/idevicesyslog.c
index 830b76a..dc404b0 100644
--- a/tools/idevicesyslog.c
+++ b/tools/idevicesyslog.c
@@ -880,7 +880,7 @@ static void print_usage(int argc, char **argv, int is_error)
                 "  -o, --output FILE     write to FILE instead of stdout\n"
                 "                        (existing FILE will be overwritten)\n"
                 "  --colors              force writing colored output, e.g. for --output\n"
-                "  --syslog_relay        force use of syslog_relay service\n"
+                "  --syslog-relay        force use of syslog_relay service\n"
                 "\n"
                 "COMMANDS:\n"
                 "  pidlist               Print pid and name of all running processes.\n"