am: fix error message in parse_opt_show_current_patch()

The argument order was incorrect. This was introduced by 246cac8
(i18n: turn even more messages into "cannot be used together" ones,
2022-01-05).

Signed-off-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

builtin/am.c

@@ -2303,7 +2303,8 @@ static int parse_opt_show_current_patch(const struct option *opt, const char *ar
 	if (resume->mode == RESUME_SHOW_PATCH && new_value != resume->sub_mode)
 		return error(_("options '%s=%s' and '%s=%s' "
 					   "cannot be used together"),
-					 "--show-current-patch", "--show-current-patch", arg, valid_modes[resume->sub_mode]);
+			     "--show-current-patch", arg,
+			     "--show-current-patch", valid_modes[resume->sub_mode]);
 
 	resume->mode = RESUME_SHOW_PATCH;
 	resume->sub_mode = new_value;