man: fix typo in systemd.watchdog_device kernel option

The option that systemd actually looks for has an underscore and no dash
as can be seen in src/core/main.c.

The man/kernel-command-line.xml documentation also gets it right with
this file being the only instance of watchdog-device being used.

Fixes: c75396c30bd9 ("documentation: add description for watchdog device path")
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
(cherry picked from commit 6f8a9d0917d6fe42c674466bffead9ac19db98e9)

diff --git a/man/systemd-system.conf.xml b/man/systemd-system.conf.xml
index 580da9d75f564c31085ea50e51edf0b906bb85f4..144bbfe15302dd7cc34f9bdf6910774d340660e4 100644 (file)
--- a/man/systemd-system.conf.xml
+++ b/man/systemd-system.conf.xml
@@ -353,7 +353,7 @@
 
         <para>If <varname>RuntimeWatchdogSec=</varname> is set to a non-zero value, the watchdog hardware
         (<filename>/dev/watchdog0</filename> or the path specified with <varname>WatchdogDevice=</varname> or
-        the kernel option <varname>systemd.watchdog-device=</varname>) will be programmed to automatically
+        the kernel option <varname>systemd.watchdog_device=</varname>) will be programmed to automatically
         reboot the system if it is not contacted within the specified timeout interval. The system manager
         will ensure to contact it at least once in half the specified timeout interval. This feature requires
         a hardware watchdog device to be present, as it is commonly the case in embedded and server