Update Bluetooth and Wifi sections in week13.md

public/markdown/weekly-assignments/week13.md

@@ -52,7 +52,9 @@ As the pinout are different for the two boards, I had to be carrefull to change
 # Bluetooth
 Ble nightmare
 # Wifi
-## Websocket
+## TCP/IP
+Both websocket and mqtt operate over TCP/IP
+### Websocket
 I first flash the micropython firmware to the esp32C3 using (linux only, on windows it should be esptool.exe) : 
 ```bash
 esptool.py --chip esp32c3 --port /dev/ttyACM0 erase_flash