Update content/hardware/03.nano/boards/nano-r4/tech-specs.yml

Co-authored-by: TaddyHC <94547080+TaddyHC@users.noreply.github.com>

Author: canchebagur

content/hardware/03.nano/boards/nano-r4/tech-specs.yml

@@ -13,7 +13,8 @@ Pins:
   PWM pins: 6
   External interrupts: 2,3
 Communication:
-  UART: "2 (Serial: USB, Serial1: D0/D1)"
+  Serial interfaces: "2 (Serial over USB, Serial1 on D0/D1)"
+
   I2C: "2 (5 V: A4, A5 / 3.3 V: QWIIC, J3, J4)"
   SPI: 1
   CAN: 1