Add DIP switches position

Author: fabaff

_board/lilygo_ttgo_t8_s2_st7789.md

@@ -27,15 +27,15 @@ features:
  - on/off power switch
  - reset and boot button
  - onboard 32.768kHz crystal oscillator
- - USB type-C connector
+ - USB-C connector
 
 **Schematic:**
 - [LILYGO Github repository](https://github.com/Xinyuan-LilyGO/LilyGo-T-Display-S2)
 
 **Board compatibility:**
 
 This image is working on the TTGO T8 ESP32-S2 V1.1 as well.
-It's basically the same board as the st7789 just without the display.
+It's basically the same board as the ST7789 just without the display.
 
 To flash this image use this command:
 
@@ -44,4 +44,13 @@ esptool.py  --chip esp32s2 --port (COMPORT) --baud 115200 write_flash 0x000 \
   adafruit-circuitpython-lilygo_ttgo_t8_s2_st7789-xx_XX-X.Y.Z.bin
 ```
 
-After flashing change the dip switches to OTG mode, when reconnected you should see the CIRCUITPY drive.
+After flashing change the DIP switches (the ones closer to the USB-C connector) to OTG mode, when reconnected you should see the CIRCUITPY drive.
+
+```text
+USB        OTG
+
+On         On
+o   o        o   o
+  o   o    o   o
+1 2 3 4    1 2 3 4
+```