v1.5.1 for ESP32 + ENC28J60

#### Releases v1.5.1

1. Initial coding to support ESP32 boards using ENC28J60 LwIP Ethernet. Sync with [WebServer_WT32_ETH01 v1.5.1](https://github.com/khoih-prog/WebServer_WT32_ETH01)

Author: khoih-prog

platformio/platformio.ini

@@ -39,7 +39,7 @@ lib_deps =
 build_flags =
 ; set your debug output (default=Serial)
  -D DEBUG_ESP_PORT=Serial
-; comment the folowing line to enable WiFi debugging
+; comment the following line to enable WiFi debugging
  -D NDEBUG
 
 [env:ESP32]