task_watchdog: Fixed the default timeout
task_watchdog: Fixed the default timeout

The watchdog timeout was mistakenly getting set to 6 seconds instead of 26 seconds
due to incorrect macro being used.

espressif/ESP8266_RTOS_SDK,espressif/ESP8266_RTOS_SDK,espressif/ESP8266_RTOS_SDK,espressif/ESP8266_RTOS_SDK,espressif/ESP8266_RTOS_SDK