ESP32 default port in comment (espressif#721)

* ESP32 default port in comment

* ESP32 default hostname.

Author: rafacouto

libraries/ArduinoOTA/src/ArduinoOTA.h

@@ -29,10 +29,10 @@ class ArduinoOTAClass
     ArduinoOTAClass();
     ~ArduinoOTAClass();
 
-    //Sets the service port. Default 8266
+    //Sets the service port. Default 3232
     void setPort(uint16_t port);
 
-    //Sets the device hostname. Default esp8266-xxxxxx
+    //Sets the device hostname. Default esp32-xxxxxx
     void setHostname(const char *hostname);
     String getHostname();