watchdog: shell: adopt SHELL_HELP

have wdt shell commands use the new SHELL_HELP macro

Signed-off-by: Benjamin Cabé <benjamin@zephyrproject.org>

Author: kartben

drivers/watchdog/wdt_shell.c

@@ -9,20 +9,16 @@
 #include <zephyr/drivers/watchdog.h>
 
 #define WDT_SETUP_HELP                                                                             \
-	"Set up watchdog instance. Syntax:\n"                                                      \
-	"<device>"
+	SHELL_HELP("Set up watchdog instance", "<device>")
 
 #define WDT_DISABLE_HELP                                                                           \
-	"Disable watchdog instance. Syntax:\n"                                                     \
-	"<device>"
+	SHELL_HELP("Disable watchdog instance", "<device>")
 
 #define WDT_TIMEOUT_HELP                                                                           \
-	"Install a new timeout. Syntax:\n"                                                         \
-	"<device> <none|cpu|soc> <min_ms> <max_ms>"
+	SHELL_HELP("Install a new timeout", "<device> <none|cpu|soc> <min_ms> <max_ms>")
 
 #define WDT_FEED_HELP                                                                              \
-	"Feed specified watchdog timeout. Syntax:\n"                                               \
-	"<device> <channel_id>"
+	SHELL_HELP("Feed specified watchdog timeout", "<device> <channel_id>")
 
 static const char *const wdt_reset_name[] = {
 	[WDT_FLAG_RESET_NONE] = "none",