Update content/hardware/03.nano/boards/nano-esp32/tutorials/cheat-sheet/cheat-sheet.md

Co-authored-by: Luca Burelli <pil@iol.it>

Author: karlsoderby

content/hardware/03.nano/boards/nano-esp32/tutorials/cheat-sheet/cheat-sheet.md

@@ -465,7 +465,7 @@ Serial0.write("Hello world!");
 
 ### Serial1 & Serial2
 
-The Nano ESP32 features additional hardware serial ports, but these needs to be manually assigned.
+The Nano ESP32 features 2 additional hardware serial ports that have no pre-defined pins, and can be connected to any free GPIO. Therefore, to use them, their TX and RX pins need to be manually assigned.
 
 To use `Serial1` and `Serial2`, you need to initialize them in your program's `setup()` function: