Update logger.rst (#3588)

No logger level "WARNING". Should be "WARN"

components/logger.rst

@@ -10,7 +10,7 @@ Logger Component
 The logger component automatically logs all log messages through the
 serial port and through MQTT topics (if there is an MQTT client in the
 configuration). By default, all logs with a severity ``DEBUG`` or higher will be shown.
-Increasing the log level severity (to e.g ``INFO`` or ``WARNING``) can help with the performance of the application and memory size.
+Increasing the log level severity (to e.g ``INFO`` or ``WARN``) can help with the performance of the application and memory size.
 
 .. code-block:: yaml